Attempt to reapply crrev.com/137083.

build/common.gypi

 # Copyright (c) 2012 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 34 matching lines @@
           'enable_touch_ui%': 0,
 
           # Enable inclusion of touch-optimized resources.
           # TODO(joi): Rename to enable_touch_assets.
           'enable_metro%': 0,
 
           # Is this change part of the android upstream bringup?
           # Allows us to *temporarily* disable certain things for
           # staging.  Only set to 1 in a GYP_DEFINES.
           'android_upstream_bringup%': 0,
+
+          # Override buildtype to select the desired build flavor.
+          # Dev - everyday build for development/testing
+          # Official - release build (generally implies additional processing)
+          # TODO(mmoss) Once 'buildtype' is fully supported (e.g. Windows gyp
+          # conversion is done), some of the things which are now controlled by
+          # 'branding', such as symbol generation, will need to be refactored
+          # based on 'buildtype' (i.e. we don't care about saving symbols for
+          # non-Official # builds).
+          'buildtype%': 'Dev',
         },
         # Copy conditionally-set variables out one scope.
         'chromeos%': '<(chromeos)',
         'use_aura%': '<(use_aura)',
         'use_ash%': '<(use_ash)',
         'use_openssl%': '<(use_openssl)',
         'use_virtual_keyboard%': '<(use_virtual_keyboard)',
         'enable_viewport%': '<(enable_viewport)',
         'enable_hidpi%': '<(enable_hidpi)',
         'enable_touch_ui%': '<(enable_touch_ui)',
         'enable_metro%': '<(enable_metro)',
         'android_upstream_bringup%': '<(android_upstream_bringup)',
+        'buildtype%': '<(buildtype)',
+
+        # Use of precompiled headers on Windows. See comment below.
+        'chromium_win_pch%': '0',
 
         # Compute the architecture that we're building on.
         'conditions': [
           [ 'OS=="win" or OS=="mac"', {
             'host_arch%': 'ia32',
           }, {
             # This handles the Unix platforms for which there is some support.
             # Anything else gets passed through, which probably won't work very
             # well; such hosts should pass an explicit target_arch to gyp.
             'host_arch%':
@@ skipping 42 matching lines @@
       'toolkit_views%': '<(toolkit_views)',
       'use_aura%': '<(use_aura)',
       'use_ash%': '<(use_ash)',
       'use_openssl%': '<(use_openssl)',
       'use_virtual_keyboard%': '<(use_virtual_keyboard)',
       'enable_viewport%': '<(enable_viewport)',
       'enable_hidpi%': '<(enable_hidpi)',
       'enable_touch_ui%': '<(enable_touch_ui)',
       'enable_metro%': '<(enable_metro)',
       'android_upstream_bringup%': '<(android_upstream_bringup)',
+      'chromium_win_pch%': '<(chromium_win_pch)',
 
       # We used to provide a variable for changing how libraries were built.
       # This variable remains until we can clean up all the users.
       # This needs to be one nested variables dict in so that dependent
       # gyp files can make use of it in their outer variables.  (Yikes!)
       # http://code.google.com/p/chromium/issues/detail?id=83308
       'library%': 'static_library',
 
       # Override branding to select the desired branding flavor.
       'branding%': 'Chromium',
 
-      # Override buildtype to select the desired build flavor.
-      # Dev - everyday build for development/testing
-      # Official - release build (generally implies additional processing)
-      # TODO(mmoss) Once 'buildtype' is fully supported (e.g. Windows gyp
-      # conversion is done), some of the things which are now controlled by
-      # 'branding', such as symbol generation, will need to be refactored based
-      # on 'buildtype' (i.e. we don't care about saving symbols for non-Official
-      # builds).
-      'buildtype%': 'Dev',
+      'buildtype%': '<(buildtype)',
 
       # Default architecture we're building for is the architecture we're
       # building on.
       'target_arch%': '<(host_arch)',
 
       # This variable tells WebCore.gyp and JavaScriptCore.gyp whether they are
       # are built under a chromium full build (1) or a webkit.org chromium
       # build (0).
       'inside_chromium_build%': 1,
 
@@ skipping 275 matching lines @@
 
         # Use GPU accelerated cross process image transport by default
         # on linux builds with the Aura window manager
         ['use_aura==1 and OS=="linux"', {
           'ui_compositor_image_transport%': 1,
         }, {
           'ui_compositor_image_transport%': 0,
         }],
 
         # Turn precompiled headers on by default for VS 2010.
-        ['OS=="win" and MSVS_VERSION=="2010"', {
+        ['OS=="win" and MSVS_VERSION=="2010" and buildtype!="Official"', {
           'chromium_win_pch%': 1
         }],
 
         ['use_aura==1 or chromeos==1 or OS=="android"', {
           'enable_plugin_installation%': 0,
         }, {
           'enable_plugin_installation%': 1,
         }],
 
         ['OS=="android"', {
@@ skipping 2605 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }