Enable precompiled headers for Blink on Windows

third_party/WebKit/Source/core/win/precompile-core.gypi

Index: third_party/WebKit/Source/core/win/precompile-core.gypi
diff --git a/third_party/WebKit/Source/core/win/precompile-core.gypi b/third_party/WebKit/Source/core/win/precompile-core.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..f2357c9649ae8b5f39e9f56bf7e0e1255f8659f5
--- /dev/null
+++ b/third_party/WebKit/Source/core/win/precompile-core.gypi
@@ -0,0 +1,29 @@
+# Copyright 2015 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.
+
+# Include this file to make core targets in your .gyp use the default
+# precompiled header on Windows, when precompiled headers are turned on.
+
+{
+  'conditions': [
+      ['OS=="win" and chromium_win_pch==1', {
+          'target_defaults': {
+              'msvs_precompiled_header': '<(DEPTH)/third_party/WebKit/Source/core/win/Precompile-core.h',
+              'msvs_precompiled_source': '<(DEPTH)/third_party/WebKit/Source/core/win/Precompile-core.cpp',
+              'sources': ['<(DEPTH)/third_party/WebKit/Source/core/win/Precompile-core.cpp'],
+              'msvs_settings': {
+                  # Compiling the large headers in Blink hits the
+                  # default size limits in precompile header
+                  # compilation in VS2013. Here we increase the limits

[Nico, 2016/07/14 19:58:52]

do we still need this?

[Daniel Bratell, 2016/07/15 06:43:55]

I don't think so. This survived in the CL while it was being removed in the tree
so I'm removing it in the CL as well.

+                  # to 120% of default.
+                  'VCCLCompilerTool': {
+                      'AdditionalOptions': [
+                          '-Zm120',
+                      ],
+                  },
+              },
+          }
+      }],
+  ],
+}