Extract WebGraphicsContext3DImpl from webkit/common/gpu.

content/common/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/features.gni")
 import("//build/config/ui.gni")
 import("//content/common/common.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
 if (is_chromeos && use_x11 && cpu_arch != "arm") {
@@ skipping 84 matching lines @@
     "//third_party/libjingle",
   ]
 
   if (!is_ios) {
     deps += [
       "//cc",
       "//ipc",
       "//ipc/mojo",
       # TODO: the dependency on gl_in_process_context should be decoupled from
       # content and moved to android_webview. See crbug.com/365797.
+      "//gpu/blink",
       "//gpu/command_buffer/client:gl_in_process_context",
       "//gpu/command_buffer/client:gles2_c_lib",
       "//gpu/command_buffer/client:gles2_cmd_helper",
       "//gpu/command_buffer/client:gles2_implementation",
       "//gpu/command_buffer/service",
       "//gpu/ipc",
       "//gpu/skia_bindings",
       "//media",
       "//media:shared_memory_support",
       "//mojo/edk/system",
@@ skipping 236 matching lines @@
     "geolocation_service.mojom",
     "permission_service.mojom",
     "render_frame_setup.mojom",
   ]
 
   deps = [
     "//content/public/common:mojo_bindings",
     "//mojo/public/interfaces/application:application",
   ]
 }