Remove (untested) code for unsupported compilers.

test/cctest/cctest.cc

Index: test/cctest/cctest.cc
diff --git a/test/cctest/cctest.cc b/test/cctest/cctest.cc
index d6b1308086e0578e92bc73e6fdc75ab0ce1ec6a8..170aa5a8a5fdc59a9e03d15f5fd264697c4774ba 100644
--- a/test/cctest/cctest.cc
+++ b/test/cctest/cctest.cc
@@ -34,12 +34,12 @@
 #include "test/cctest/profiler-extension.h"
 #include "test/cctest/trace-extension.h"
 
-#if (defined(_WIN32) || defined(_WIN64))
+#if V8_OS_WIN
 #include <windows.h>  // NOLINT
-#if defined(_MSC_VER)
+#if V8_CC_MSVC
 #include <crtdbg.h>
-#endif  // defined(_MSC_VER)
-#endif  // defined(_WIN32) || defined(_WIN64)
+#endif
+#endif
 
 enum InitializationState {kUnset, kUnintialized, kInitialized};
 static InitializationState initialization_state_  = kUnset;
@@ -145,12 +145,12 @@ static void SuggestTestHarness(int tests) {
 
 
 int main(int argc, char* argv[]) {
-#if (defined(_WIN32) || defined(_WIN64))
+#if V8_OS_WIN
   UINT new_flags =
       SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX;
   UINT existing_flags = SetErrorMode(new_flags);
   SetErrorMode(existing_flags | new_flags);
-#if defined(_MSC_VER)
+#if V8_CC_MSVC
   _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_FILE);
   _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
   _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_FILE);
@@ -158,8 +158,8 @@ int main(int argc, char* argv[]) {
   _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_FILE);
   _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
   _set_error_mode(_OUT_TO_STDERR);
-#endif  // _MSC_VER
-#endif  // defined(_WIN32) || defined(_WIN64)
+#endif  // V8_CC_MSVC
+#endif  // V8_OS_WIN
 
   v8::V8::InitializeICU();
   v8::Platform* platform = v8::platform::CreateDefaultPlatform();