Precompile Document.h and LayoutObject.h for Source/web

Source/core/core.gyp

Index: Source/core/core.gyp
diff --git a/Source/core/core.gyp b/Source/core/core.gyp
index 1c7ab85472a2c2acea0f4a74200c726efe48d9da..e20596b43a9745f9d8632e0d3e7af9edb6d4d419 100644
--- a/Source/core/core.gyp
+++ b/Source/core/core.gyp
@@ -30,7 +30,7 @@
 
 {
   'includes': [
-    '../build/win/precompile.gypi',
+    '../build/win/precompile-core.gypi',
     '../build/features.gypi',
     '../build/scripts/scripts.gypi',
     '../bindings/core/core.gypi',  # core can depend on bindings/core, but not on bindings
@@ -485,7 +485,7 @@
         }],
         ['OS=="win" and chromium_win_pch==1', {
           'sources/': [
-            ['include', '<(DEPTH)/third_party/WebKit/Source/build/win/Precompile.cpp'],
+            ['include', '<(DEPTH)/third_party/WebKit/Source/build/win/Precompile-core.cpp'],
           ],
         }],
         ['OS=="mac"', {
@@ -573,7 +573,7 @@
         }],
         ['OS=="win" and chromium_win_pch==1', {
           'sources/': [
-            ['include', '<(DEPTH)/third_party/WebKit/Source/build/win/Precompile.cpp'],
+            ['include', '<(DEPTH)/third_party/WebKit/Source/build/win/Precompile-core.cpp'],
           ],
         }],
         ['use_default_render_theme==0 and OS != "android"', {
@@ -810,7 +810,7 @@
             }],
             ['OS=="win" and chromium_win_pch==1', {
               'sources/': [
-                ['include', '<(DEPTH)/third_party/WebKit/Source/build/win/Precompile.cpp'],
+                ['include', '<(DEPTH)/third_party/WebKit/Source/build/win/Precompile-core.cpp'],
               ],
             }],
             ['OS=="mac"', {