Make it possible to switch between two different versions of ANGLE.

content/content_gpu.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../skia/skia.gyp:skia',
     '../ui/gl/gl.gyp:gl',
   ],
   'sources': [
     'gpu/gpu_main.cc',
     'gpu/gpu_process.cc',
     'gpu/gpu_process.h',
     'gpu/gpu_child_thread.cc',
     'gpu/gpu_child_thread.h',
     'gpu/gpu_watchdog_thread.cc',
     'gpu/gpu_watchdog_thread.h',
   ],
   'include_dirs': [
     '..',
   ],
   'conditions': [
     ['OS=="win"', {
       'include_dirs': [
         '<(DEPTH)/third_party/khronos',
-        '<(DEPTH)/third_party/angle/src',
+        '<(angle_path)/src',
         '<(DEPTH)/third_party/wtl/include',
       ],
       'dependencies': [
-        '../third_party/angle/src/build_angle.gyp:libEGL',
-        '../third_party/angle/src/build_angle.gyp:libGLESv2',
+        '<(angle_path)/src/build_angle.gyp:libEGL',
+        '<(angle_path)/src/build_angle.gyp:libGLESv2',
       ],
       'link_settings': {
         'libraries': [
           '-lsetupapi.lib',
         ],
       },
       'copies': [
         {
           'destination': '<(PRODUCT_DIR)',
           'files': [
@@ skipping 32 matching lines @@
         '<(DEPTH)/third_party/openmax/il',
       ],
     }],
     ['target_arch!="arm" and chromeos == 1', {
       'include_dirs': [
         '<(DEPTH)/third_party/libva',
       ],
     }],
   ],
 }