Bug Fix: Set USE_CRAS for //chrome and //chrome/ui

chrome/browser/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 232 matching lines @@
     "//ui/message_center",
     "//ui/resources",
     "//ui/shell_dialogs",
     "//ui/strings",
   ]
   data_deps = []
 
   sources +=
       rebase_path(gypi_values.chrome_browser_undo_sources, ".", "//chrome")
 
+  if (is_chromeos && use_cras) {
+    defines += [ "USE_CRAS" ]
+  }
+
   if (!is_ios) {
     sources +=
         rebase_path(gypi_values.chrome_browser_non_ios_sources, ".", "//chrome")
     sources += rebase_path(gypi_values.chrome_browser_autocomplete_sources,
                            ".",
                            "//chrome")
     sources += rebase_path(gypi_values.chrome_browser_bookmark_sources,
                            ".",
                            "//chrome")
     sources += rebase_path(gypi_values.chrome_browser_browser_process_sources,
@@ skipping 1121 matching lines @@
   # linking all of the test support.
   static_library("pepper_cdm_test_constants") {
     testonly = true
     visibility = [ "//chrome/*" ]
     sources = [
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }