Migrate the Android compositor to cc::Layer classes.

android_webview/native/webview_native.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'webview_native',
       'type': 'static_library',
       'dependencies': [
         '../../base/base.gyp:base_static',
         '../../content/content.gyp:web_contents_delegate_android',
+        '../../skia/skia.gyp:skia',
         'android_webview_native_jni',
       ],
       'include_dirs': [
         '../..',
         '../../skia/config',
         '<(SHARED_INTERMEDIATE_DIR)/android_webview',
       ],
       'sources': [
         'android_protocol_handler.cc',
         'android_protocol_handler.h',
@@ skipping 53 matching lines @@
       'variables': {
         'jni_gen_dir': 'android_webview',
       },
       'includes': [ '../../build/jni_generator.gypi' ],
       'dependencies': [
         'android_jar_jni_headers',
       ],
     },
   ],
 }