Roll Chrome into Mojo.

skia/config/SkUserConfig.h

Index: skia/config/SkUserConfig.h
diff --git a/skia/config/SkUserConfig.h b/skia/config/SkUserConfig.h
index 358fb13c30432a113ecaaae0d3e0481068c93921..63131ad99fe1feef7afd7171d6a722afb9c8ad2d 100644
--- a/skia/config/SkUserConfig.h
+++ b/skia/config/SkUserConfig.h
@@ -232,24 +232,6 @@ SK_API void SkDebugf_FileLine(const char* file, int line, bool fatal,
 // assertion.
 #define SK_CRASH() SkDebugf_FileLine(__FILE__, __LINE__, true, "SK_CRASH")
 
-#ifndef SK_ATOMICS_PLATFORM_H
-#  if defined(SK_BUILD_FOR_WIN)
-#    define SK_ATOMICS_PLATFORM_H "third_party/skia/src/ports/SkAtomics_win.h"
-#  elif defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
-#    define SK_ATOMICS_PLATFORM_H "third_party/skia/src/ports/SkAtomics_android.h"
-#  else
-#    define SK_ATOMICS_PLATFORM_H "third_party/skia/src/ports/SkAtomics_sync.h"
-#  endif
-#endif
-
-#ifndef SK_MUTEX_PLATFORM_H
-#  if defined(SK_BUILD_FOR_WIN)
-#    define SK_MUTEX_PLATFORM_H "third_party/skia/src/ports/SkMutex_win.h"
-#  else
-#    define SK_MUTEX_PLATFORM_H "third_party/skia/src/ports/SkMutex_pthread.h"
-#  endif
-#endif
-
 // These flags are no longer defined in Skia, but we have them (temporarily)
 // until we update our call-sites (typically these are for API changes).
 //