Add missing --profile-export-file help description and cli docs descr…

…iption (#374)

src/c++/perf_analyzer/command_line_parser.cc

@@ -148,6 +148,7 @@ CLParser::Usage(const std::string& msg)
   std::cerr << std::endl;
   std::cerr << "IV. OTHER OPTIONS: " << std::endl;
   std::cerr << "\t-f <filename for storing report in csv format>" << std::endl;
+  std::cerr << "\t--profile-export-file <path>" << std::endl;
   std::cerr << "\t-H <HTTP header>" << std::endl;
   std::cerr << "\t--streaming" << std::endl;
   std::cerr << "\t--grpc-compression-algorithm <compression_algorithm>"
@@ -608,6 +609,13 @@ CLParser::Usage(const std::string& msg)
              "this option. By default, the result is not recorded in a file.",
              9)
       << std::endl;
+  std::cerr << std::setw(9) << std::left << " --profile-export-file: "
+            << FormatMessage(
+                   "Specifies the path that the profile export will be "
+                   "generated at. By default, the profile export will not be "
+                   "generated.",
+                   9)
+            << std::endl;
   std::cerr
       << std::setw(9) << std::left << " -H: "
       << FormatMessage(

src/c++/perf_analyzer/docs/cli.md

@@ -529,6 +529,13 @@ Specifies the path that the latency report file will be generated at.
 
 When `-f` is not specified, a latency report will not be generated.
 
+#### `--profile-export-file <path>`
+
+Specifies the path that the profile export will be generated at.
+
+When `--profile-export-file` is not specified, a profile export will not be
+generated.
+
 #### `--verbose-csv`
 
 Enables additional information being output to the CSV file generated by Perf