test: remove per-context proxy hacks for Windows/Chromium

playwright/src/test/java/com/microsoft/playwright/TestBrowserContextFetch.java

@@ -218,7 +218,7 @@ void shouldWorkWithContextLevelProxy() throws ExecutionException, InterruptedExc
         writer.write("<title>Served by the proxy</title>");
       }
     });
-    try (Browser browser = browserType.launch(new BrowserType.LaunchOptions().setProxy("http://per-context"))) {
+    try (Browser browser = browserType.launch()) {
       BrowserContext context = browser.newContext(new Browser.NewContextOptions().setProxy("localhost:" + server.PORT));
       Future<Server.Request> request = server.futureRequest("/target.html");
       APIResponse response = context.request().get("http://non-existent.com/target.html");

playwright/src/test/java/com/microsoft/playwright/TestBrowserContextProxy.java

@@ -29,31 +29,6 @@
 import static org.junit.jupiter.api.Assertions.*;
 
 public class TestBrowserContextProxy extends TestBase {
-
-  @Override
-  @BeforeAll
-  // Hide base class method to provide extra option.
-  void launchBrowser() {
-    BrowserType.LaunchOptions options = createLaunchOptions();
-    options.setProxy(new Proxy("per-context"));
-    launchBrowser(options);
-  }
-
-  static boolean isChromiumWindows() {
-    return isChromium() && isWindows;
-  }
-
-  @Test
-  @EnabledIf(value="isChromiumWindows", disabledReason="Platform-specific")
-  void shouldThrowForMissingGlobalProxyOnChromiumWindows() {
-    try (Browser browser = browserType.launch(createLaunchOptions())) {
-      PlaywrightException e = assertThrows(PlaywrightException.class, () -> {
-        browser.newContext(new Browser.NewContextOptions().setProxy("localhost:" + server.PORT));
-      });
-      assertTrue(e.getMessage().contains("Browser needs to be launched with the global proxy"));
-    }
-  }
-
   void shouldThrowForBadServerValue() {
     // Enforced by compiler in Java
   }

playwright/src/test/java/com/microsoft/playwright/TestClientCertificates.java

@@ -57,13 +57,6 @@ void stopServer() {
     super.stopServer();
   }
 
-  @BeforeAll
-  @Override
-  void launchBrowser() {
-    // TODO: remove once Chromium Stable tests pass without it on Windows.
-    launchBrowser(createLaunchOptions().setProxy(new Proxy("per-context")));
-  }
-
   @Test
   public void shouldFailWithNoClientCertificatesProvided() {
     APIRequestContext request = playwright.request().newContext(