Add CC to the GN build, work on GPU more

BUILD.gn

 # Copyright (c) 2013 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.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
 # In GN, a "group" is a dummy target that just lists other targets.
 group("root") {
   # Note that some dependencies are commented out. These are things that are
   # currently written but not hooked up to the build yet. They may need to be
   # completed or possibly just tested and then re-enabled.
   deps = [
     # This is a temporary test of the not-yet-complete NaCl cross-compilation.
     #"//base(//build/toolchain/nacl:x86_newlib)",
 
     "//apps/common/api:apps_api",
+    "//cc",
     #"//chrome",
     "//components/favicon_base",
     "//components/language_usage_metrics",
     "//components/metrics",
     "//components/navigation_metrics",
     "//components/onc",
     "//components/os_crypt",
     "//components/query_parser",
     "//components/resources:components_resources",
     "//components/startup_metric_utils",
     "//components/tracing",
     "//components/translate:translate_core_browser",
     "//components/translate:translate_core_common",
     "//components/url_matcher",
     "//content/public/common",
     "//content/public/renderer",
     "//crypto",
     "//device/usb",
     #"//extensions/common/api:extensions_api",
     "//gin",
-    "//gpu/command_buffer/client",
-    "//gpu/command_buffer/service",
+    "//gpu",
     "//google_apis",
     "//ipc",
     "//mojo",
     "//net",
     "//ppapi:ppapi_c",
     #"//sdch",
     "//skia",
     "//sql",
     "//third_party/brotli",
     "//third_party/harfbuzz-ng",
@@ skipping 38 matching lines @@
   }
 
   if (is_win) {
     deps += [
       "//ui/metro_viewer",
     ]
   }
 
   if (is_android) {
     deps -= [
+      "//cc",
       "//content/public/common",
       "//content/public/renderer",
       "//ppapi:ppapi_c",
       "//third_party/libusb",
       #"//third_party/WebKit/Source/platform",
       "//third_party/WebKit/Source/wtf",  # TODO(brettw) re-enable for Android.
       "//tools/gn",
 
       # This stuff all depends on ui/surface which requires some .class jni
       # generators (ui/gl/gl.gyp:surface_jni_headers).
       "//ui/gl",
-      "//gpu/command_buffer/client",
-      "//gpu/command_buffer/service",
+      "//gpu",
       "//ui/surface",
     ]
   }
 }