Share precompiled header setup for blink between Windows and Mac.

third_party/WebKit/Source/platform/win/Precompile-platform.h

Index: third_party/WebKit/Source/platform/win/Precompile-platform.h
diff --git a/third_party/WebKit/Source/platform/win/Precompile-platform.h b/third_party/WebKit/Source/platform/win/Precompile-platform.h
deleted file mode 100644
index 84bc4c879225dc0be44cf9daba02f17c127918e5..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/platform/win/Precompile-platform.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#if defined(PrecompilePlatform_h_)
-#error You shouldn't include the precompiled header file more than once.
-#endif
-
-#define PrecompilePlatform_h_
-
-#include "build/win/Precompile.h"
-
-// Include Oilpan's Handle.h by default, as it is included by a significant
-// portion of platform/ source files.
-#include "platform/heap/Handle.h"