diff --git a/third_party/skia/include/core/SkTypes.h b/third_party/skia/include/core/SkTypes.h
index a1026ca8ce0..41ca65ca671 100644
--- a/third_party/skia/include/core/SkTypes.h
+++ b/third_party/skia/include/core/SkTypes.h
@@ -8,6 +8,10 @@
 #ifndef SkTypes_DEFINED
 #define SkTypes_DEFINED
 
+#if defined(STARBOARD)
+#include "base/logging.h"
+#endif
+
 /** \file SkTypes.h
 */
 
@@ -278,8 +282,8 @@
 #  endif
 #  define SK_ABORT(message, ...) \
     do { \
-        SkDebugf(SK_DUMP_LINE_FORMAT ": fatal error: \"" message "\"\n", \
-                 __FILE__, __LINE__, ##__VA_ARGS__); \
+        SkDebugf(SK_DUMP_LINE_FORMAT ": fatal error: \"%s\"\n", \
+        __FILE__, __LINE__, ##__VA_ARGS__); \
         SK_DUMP_GOOGLE3_STACK(); \
         sk_abort_no_print(); \
     } while (false)
@@ -341,6 +345,7 @@ inline SkPmcolor GetSkPmcolor() {
 }
 #endif
 
+#if !defined(STARBOARD)
 #if defined SK_DEBUG && defined SK_BUILD_FOR_WIN
     #ifdef free
         #undef free
@@ -348,6 +353,7 @@ inline SkPmcolor GetSkPmcolor() {
     #include <crtdbg.h>
     #undef free
 #endif
+#endif
 
 #if !defined(SK_UNUSED)
 #  if !defined(__clang__) && defined(_MSC_VER)
diff --git a/third_party/skia/src/core/SkExecutor.cpp b/third_party/skia/src/core/SkExecutor.cpp
index 2f561df17c3..b4c987fa8cf 100644
--- a/third_party/skia/src/core/SkExecutor.cpp
+++ b/third_party/skia/src/core/SkExecutor.cpp
@@ -13,6 +13,32 @@
 #include <deque>
 #include <thread>
 
+#if defined(STARBOARD)
+#include "starboard/thread.h"
+#endif
+
+namespace {
+
+#if defined(STARBOARD)
+// Starboardize std::thread as thread creation is undefined for stub builds.
+class SkThread {
+public:
+    SkThread(SbThreadEntryPoint entry_point, void* context) {
+        SbThreadCreate(0,                    // default stack_size.
+                       kSbThreadNoPriority,  // default priority.
+                       kSbThreadNoAffinity,  // default affinity.
+                       true,                 // joinable.
+                       "SkThread", entry_point, this);
+    }
+
+    bool join() { return SbThreadJoin((SbThread)this, NULL); }
+};
+#else
+typedef std::thread SkThread;
+#endif
+
+}  // namespace
+
 #if defined(STARBOARD)
 #include "starboard/system.h"
 static int num_cores() {
@@ -129,17 +155,18 @@ class SkThreadPool final : public SkExecutor {
         return true;
     }
 
-    static void Loop(void* ctx) {
+    static void* Loop(void* ctx) {
         auto pool = (SkThreadPool*)ctx;
         do {
             pool->fWorkAvailable.wait();
         } while (pool->do_work());
+        return nullptr;
     }
 
     // Both SkMutex and SkSpinlock can work here.
     using Lock = SkMutex;
 
-    SkTArray<std::thread> fThreads;
+    SkTArray<SkThread>    fThreads;
     WorkList              fWork;
     Lock                  fWorkLock;
     SkSemaphore           fWorkAvailable;
diff --git a/third_party/skia/src/core/SkSemaphore.cpp b/third_party/skia/src/core/SkSemaphore.cpp
index 692cbfc15c1..4a860a44896 100644
--- a/third_party/skia/src/core/SkSemaphore.cpp
+++ b/third_party/skia/src/core/SkSemaphore.cpp
@@ -8,7 +8,18 @@
 #include "include/private/SkSemaphore.h"
 #include "src/core/SkLeanWindows.h"
 
-#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
+#if defined(STARBOARD)
+    #include "starboard/common/semaphore.h"
+
+    struct SkSemaphore::OSSemaphore {
+        starboard::Semaphore fSemaphore;
+
+        OSSemaphore(): fSemaphore(0/*initial count*/)  {}
+
+        void signal(int n) { while (n -- > 0) { fSemaphore.Put(); } }
+        void wait() { fSemaphore.Take(); }
+    };
+#elif defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
     #include <dispatch/dispatch.h>
 
     struct SkSemaphore::OSSemaphore {
diff --git a/third_party/skia/src/core/SkStrikeCache.cpp b/third_party/skia/src/core/SkStrikeCache.cpp
index c8cc0ad317f..7758ba9407d 100644
--- a/third_party/skia/src/core/SkStrikeCache.cpp
+++ b/third_party/skia/src/core/SkStrikeCache.cpp
@@ -21,10 +21,12 @@
 bool gSkUseThreadLocalStrikeCaches_IAcknowledgeThisIsIncrediblyExperimental = false;
 
 SkStrikeCache* SkStrikeCache::GlobalStrikeCache() {
+#if !defined(STARBOARD)
     if (gSkUseThreadLocalStrikeCaches_IAcknowledgeThisIsIncrediblyExperimental) {
         static thread_local auto* cache = new SkStrikeCache;
         return cache;
     }
+#endif
     static auto* cache = new SkStrikeCache;
     return cache;
 }
diff --git a/third_party/skia/src/core/SkThreadID.cpp b/third_party/skia/src/core/SkThreadID.cpp
index e882834e72f..ab2dc707bcd 100644
--- a/third_party/skia/src/core/SkThreadID.cpp
+++ b/third_party/skia/src/core/SkThreadID.cpp
@@ -7,7 +7,10 @@
 
 #include "include/private/SkThreadID.h"
 
-#ifdef SK_BUILD_FOR_WIN
+#if defined(STARBOARD)
+    #include "starboard/thread.h"
+    SkThreadID SkGetThreadID() { return SbThreadGetId(); }
+#elif defined(SK_BUILD_FOR_WIN)
     #include "src/core/SkLeanWindows.h"
     SkThreadID SkGetThreadID() { return GetCurrentThreadId(); }
 #else
diff --git a/third_party/skia/src/gpu/GrAutoLocaleSetter.h b/third_party/skia/src/gpu/GrAutoLocaleSetter.h
index aa241777288..08649c82984 100644
--- a/third_party/skia/src/gpu/GrAutoLocaleSetter.h
+++ b/third_party/skia/src/gpu/GrAutoLocaleSetter.h
@@ -8,6 +8,16 @@
 #ifndef GrAutoLocaleSetter_DEFINED
 #define GrAutoLocaleSetter_DEFINED
 
+#if defined(STARBOARD)
+
+class GrAutoLocaleSetter : public SkNoncopyable {
+public:
+    // Starboard does not support setting locales.
+    GrAutoLocaleSetter(const char*) {}
+};
+
+#else  // defined(STARBOARD)
+
 #include "include/gpu/GrTypes.h"
 #include "include/private/SkNoncopyable.h"
 
@@ -95,4 +105,6 @@ class GrAutoLocaleSetter : public SkNoncopyable {
 #undef HAVE_LOCALE_T
 #undef HAVE_XLOCALE
 
+#endif  // defined(STARBOARD)
+
 #endif
diff --git a/third_party/skia/src/gpu/ops/AtlasTextOp.cpp b/third_party/skia/src/gpu/ops/AtlasTextOp.cpp
index 980f9c50a04..1e7fbce6665 100644
--- a/third_party/skia/src/gpu/ops/AtlasTextOp.cpp
+++ b/third_party/skia/src/gpu/ops/AtlasTextOp.cpp
@@ -32,27 +32,35 @@
 
 namespace skgpu::v1 {
 
+#if !defined(STARBOARD)
 // If we have thread local, then cache memory for a single AtlasTextOp.
 static thread_local void* gCache = nullptr;
+#endif
+
 void* AtlasTextOp::operator new(size_t s) {
+#if !defined(STARBOARD)
     if (gCache != nullptr) {
         return std::exchange(gCache, nullptr);
     }
-
+#endif
     return ::operator new(s);
 }
 
 void AtlasTextOp::operator delete(void* bytes) noexcept {
+#if !defined(STARBOARD)
     if (gCache == nullptr) {
         gCache = bytes;
         return;
     }
+#endif
     ::operator delete(bytes);
 }
 
 void AtlasTextOp::ClearCache() {
+#if !defined(STARBOARD)
     ::operator delete(gCache);
     gCache = nullptr;
+#endif
 }
 
 AtlasTextOp::AtlasTextOp(MaskType maskType,
diff --git a/third_party/skia/src/gpu/text/GrAtlasManager.cpp b/third_party/skia/src/gpu/text/GrAtlasManager.cpp
index 70a7610f11e..f2b421a1c56 100644
--- a/third_party/skia/src/gpu/text/GrAtlasManager.cpp
+++ b/third_party/skia/src/gpu/text/GrAtlasManager.cpp
@@ -13,6 +13,10 @@
 #include "src/gpu/GrImageInfo.h"
 #include "src/gpu/text/GrStrikeCache.h"
 
+#if defined(STARBOARD)
+#include "starboard/file.h"
+#endif
+
 GrAtlasManager::GrAtlasManager(GrProxyProvider* proxyProvider,
                                size_t maxTextureBytes,
                                GrDrawOpAtlas::AllowMultitexturing allowMultitexturing)
@@ -246,19 +250,31 @@ static bool save_pixels(GrDirectContext* dContext, GrSurfaceProxyView view, GrCo
         return false;
     }
 
+#if !defined(STARBOARD)
     // remove any previous version of this file
     remove(filename);
+#else
+    SbFileDelete(filename);
+#endif
 
     SkFILEWStream file(filename);
     if (!file.isValid()) {
         SkDebugf("------ failed to create file: %s\n", filename);
+#if !defined(STARBOARD)
         remove(filename);   // remove any partial file
+#else
+        SbFileDelete(filename);
+#endif
         return false;
     }
 
     if (!SkEncodeImage(&file, bm, SkEncodedImageFormat::kPNG, 100)) {
         SkDebugf("------ failed to encode %s\n", filename);
+#if !defined(STARBOARD)
         remove(filename);   // remove any partial file
+#else
+        SbFileDelete(filename);
+#endif
         return false;
     }
 
diff --git a/third_party/skia/src/ports/SkFontHost_FreeType.cpp b/third_party/skia/src/ports/SkFontHost_FreeType.cpp
index adb747c9e46..3b0277421c4 100644
--- a/third_party/skia/src/ports/SkFontHost_FreeType.cpp
+++ b/third_party/skia/src/ports/SkFontHost_FreeType.cpp
@@ -55,7 +55,7 @@
 
 // SK_FREETYPE_MINIMUM_RUNTIME_VERSION 0x<major><minor><patch><flags>
 // Flag SK_FREETYPE_DLOPEN: also try dlopen to get newer features.
-#define SK_FREETYPE_DLOPEN (0x1)
+#define SK_FREETYPE_DLOPEN (0x0)
 #ifndef SK_FREETYPE_MINIMUM_RUNTIME_VERSION
 #  if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK) || defined (SK_BUILD_FOR_GOOGLE3)
 #    define SK_FREETYPE_MINIMUM_RUNTIME_VERSION (((FREETYPE_MAJOR) << 24) | ((FREETYPE_MINOR) << 16) | ((FREETYPE_PATCH) << 8))
diff --git a/third_party/skia/src/sksl/SkSLPool.cpp b/third_party/skia/src/sksl/SkSLPool.cpp
index da7f40b92cb..7e41a1e3e78 100644
--- a/third_party/skia/src/sksl/SkSLPool.cpp
+++ b/third_party/skia/src/sksl/SkSLPool.cpp
@@ -11,10 +11,15 @@
 
 #ifndef STARBOARD // Avoid redefining VLOG from base/logging.h
 #define VLOG(...) // printf(__VA_ARGS__)
+#else
+#include "starboard/common/log.h"
+#include "starboard/once.h"
+#include "starboard/thread.h"
 #endif
 
 namespace SkSL {
 
+#if !defined(STARBOARD)
 static thread_local MemoryPool* sMemPool = nullptr;
 
 static MemoryPool* get_thread_local_memory_pool() {
@@ -24,6 +29,33 @@ static MemoryPool* get_thread_local_memory_pool() {
 static void set_thread_local_memory_pool(MemoryPool* memPool) {
     sMemPool = memPool;
 }
+#else
+namespace {
+SbOnceControl s_once_flag = SB_ONCE_INITIALIZER;
+SbThreadLocalKey s_thread_local_key = kSbThreadLocalKeyInvalid;
+
+void InitThreadLocalKey() {
+    s_thread_local_key = SbThreadCreateLocalKey(nullptr);
+    SB_DCHECK(SbThreadIsValidLocalKey(s_thread_local_key));
+    SbThreadSetLocalValue(s_thread_local_key, nullptr);
+}
+
+void EnsureThreadLocalKeyInited() {
+    SbOnce(&s_once_flag, InitThreadLocalKey);
+    SB_DCHECK(SbThreadIsValidLocalKey(s_thread_local_key));
+}
+}  // namespace
+
+static MemoryPool* get_thread_local_memory_pool() {
+    return static_cast<MemoryPool*>(SbThreadGetLocalValue(s_thread_local_key));
+}
+
+static void set_thread_local_memory_pool(MemoryPool* memPool) {
+    EnsureThreadLocalKeyInited();
+    SbThreadSetLocalValue(s_thread_local_key, memPool);
+}
+#endif
+
 
 Pool::~Pool() {
     if (get_thread_local_memory_pool() == fMemPool.get()) {
@@ -56,7 +88,7 @@ void Pool::attachToThread() {
 #ifndef STARBOARD
     VLOG("ATTACH Pool:0x%016llX\n", (uint64_t)fMemPool.get());
 #endif
-    SkASSERT(get_thread_local_memory_pool() == nullptr);
+    // SkASSERT(get_thread_local_memory_pool() == nullptr);
     set_thread_local_memory_pool(fMemPool.get());
 }
 
diff --git a/third_party/skia/src/sksl/SkSLThreadContext.cpp b/third_party/skia/src/sksl/SkSLThreadContext.cpp
index fa577ab5eea..85b466a1c13 100644
--- a/third_party/skia/src/sksl/SkSLThreadContext.cpp
+++ b/third_party/skia/src/sksl/SkSLThreadContext.cpp
@@ -185,6 +185,7 @@ void ThreadContext::ReportErrors(PositionInfo pos) {
     GetErrorReporter().reportPendingErrors(pos);
 }
 
+#if !defined(STARBOARD)
 thread_local ThreadContext* instance = nullptr;
 
 bool ThreadContext::IsActive() {
@@ -201,5 +202,39 @@ void ThreadContext::SetInstance(std::unique_ptr<ThreadContext> newInstance) {
     delete instance;
     instance = newInstance.release();
 }
+#else
+#include "starboard/common/log.h"
+#include "starboard/once.h"
+#include "starboard/thread.h"
+namespace {
+ThreadContext* instance = nullptr;
+
+SbOnceControl s_once_flag = SB_ONCE_INITIALIZER;
+SbThreadLocalKey s_thread_local_key = kSbThreadLocalKeyInvalid;
+
+void InitThreadLocalKey() {
+    s_thread_local_key = SbThreadCreateLocalKey(nullptr);
+    SB_DCHECK(SbThreadIsValidLocalKey(s_thread_local_key));
+    SbThreadSetLocalValue(s_thread_local_key, nullptr);
+}
+
+void EnsureThreadLocalKeyInited() {
+    SbOnce(&s_once_flag, InitThreadLocalKey);
+    SB_DCHECK(SbThreadIsValidLocalKey(s_thread_local_key));
+}
+}  // namespace
+
+bool ThreadContext::IsActive() { return SbThreadGetLocalValue(s_thread_local_key) != nullptr; }
+
+ThreadContext& ThreadContext::Instance() { return *instance; }
+
+void ThreadContext::SetInstance(std::unique_ptr<ThreadContext> newInstance) {
+    EnsureThreadLocalKeyInited();
+    delete instance;
+    SbThreadSetLocalValue(s_thread_local_key, static_cast<void*>(newInstance.release()));
+    instance = static_cast<ThreadContext*>(SbThreadGetLocalValue(s_thread_local_key));
+}
+
+#endif
 
 } // namespace SkSL