Remove Blink-relative #includes in precompile_*.h.

Also fixes include guard style.

Bug: 836071
Change-Id: Ib6b268ee2b75e05aef2cec7220d90fa3779830eb
Reviewed-on: https://chromium-review.googlesource.com/1059985Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559003}

third_party/blink/renderer/build/mac/prefix.h

@@ -23,6 +23,12 @@
  * build without this header, although we rarely test that.
  */
 
+#ifdef THIRD_PARTY_BLINK_RENDERER_BUILD_MAC_PREFIX_H_
+#error You shouldn't include the precompiled header file more than once.
+#endif
+
+#define THIRD_PARTY_BLINK_RENDERER_BUILD_MAC_PREFIX_H_
+
 #include <pthread.h>
 #include <sys/types.h>
 #include <fcntl.h>

third_party/blink/renderer/build/win/precompile.h

@@ -2,10 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#if defined(WinPrecompile_h_)
+#ifdef THIRD_PARTY_BLINK_RENDERER_BUILD_WIN_PRECOMPILE_H_
 #error You shouldn't include the precompiled header file more than once.
 #endif
-#define WinPrecompile_h_
+
+#define THIRD_PARTY_BLINK_RENDERER_BUILD_WIN_PRECOMPILE_H_
 
 // Precompiled header for Blink when built on Windows using
 // GYP-generated project files.  Not used by other build

third_party/blink/renderer/core/precompile_core.h

@@ -2,15 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#if defined(PrecompileCore_h_)
+#ifdef THIRD_PARTY_BLINK_RENDERER_CORE_PRECOMPILE_CORE_H_
 #error You shouldn't include the precompiled header file more than once.
 #endif
-#define PrecompileCore_h_
+
+#define THIRD_PARTY_BLINK_RENDERER_CORE_PRECOMPILE_CORE_H_
 
 #if defined(_MSC_VER)
-#include "build/win/precompile.h"
+#include "third_party/blink/renderer/build/win/precompile.h"
 #elif defined(__APPLE__)
-#include "build/mac/prefix.h"
+#include "third_party/blink/renderer/build/mac/prefix.h"
 #else
 #error implement
 #endif
@@ -18,8 +19,8 @@
 // In Blink a lot of operations center around dom and Document, or around
 // layout/rendering and LayoutObject. Those two headers are in turn pulling
 // in large parts of Blink's other headers which means that every compilation
-// unit is compiling large parts of Blink. By precompiling Document.h
-// and LayoutObject.h we only have to compile those parts once rather
+// unit is compiling large parts of Blink. By precompiling document.h
+// and layout_object.h we only have to compile those parts once rather
 // than 1500 times. It can make a large difference in compilation
 // times (3-4 times faster).
 #include "third_party/blink/renderer/core/dom/document.h"

third_party/blink/renderer/platform/precompile_platform.h

@@ -2,20 +2,20 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#if defined(PrecompilePlatform_h_)
+#ifdef THIRD_PARTY_BLINK_RENDERER_PLATFORM_PRECOMPILE_PLATFORM_H_
 #error You shouldn't include the precompiled header file more than once.
 #endif
 
-#define PrecompilePlatform_h_
+#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_PRECOMPILE_PLATFORM_H_
 
 #if defined(_MSC_VER)
-#include "build/win/precompile.h"
+#include "third_party/blink/renderer/build/win/precompile.h"
 #elif defined(__APPLE__)
-#include "build/mac/prefix.h"
+#include "third_party/blink/renderer/build/mac/prefix.h"
 #else
 #error implement
 #endif
 
-// Include Oilpan's Handle.h by default, as it is included by a significant
+// Include Oilpan's handle.h by default, as it is included by a significant
 // portion of platform/ source files.
 #include "third_party/blink/renderer/platform/heap/handle.h"