Allow extensions of the ManifestParser outside of the content/ layer.

content/content_renderer.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',
     '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
     '../cc/cc.gyp:cc',
     '../cc/blink/cc_blink.gyp:cc_blink',
@@ skipping 35 matching lines @@
     'public_renderer_sources': [
       'public/renderer/android_content_detection_prefixes.cc',
       'public/renderer/android_content_detection_prefixes.h',
       'public/renderer/browser_plugin_delegate.cc',
       'public/renderer/browser_plugin_delegate.h',
       'public/renderer/content_renderer_client.cc',
       'public/renderer/content_renderer_client.h',
       'public/renderer/context_menu_client.h',
       'public/renderer/document_state.cc',
       'public/renderer/document_state.h',
+      'public/renderer/manifest_parser.h',
       'public/renderer/navigation_state.cc',
       'public/renderer/navigation_state.h',
       'public/renderer/pepper_plugin_instance.h',
       'public/renderer/platform_event_observer.h',
       'public/renderer/render_font_warmup_win.h',
       'public/renderer/render_frame.h',
       'public/renderer/render_frame_observer.cc',
       'public/renderer/render_frame_observer.h',
       'public/renderer/render_frame_observer_tracker.h',
       'public/renderer/render_process_observer.cc',
@@ skipping 148 matching lines @@
       'renderer/internal_document_state_data.h',
       'renderer/java/gin_java_bridge_dispatcher.cc',
       'renderer/java/gin_java_bridge_dispatcher.h',
       'renderer/java/gin_java_bridge_object.cc',
       'renderer/java/gin_java_bridge_object.h',
       'renderer/java/gin_java_bridge_value_converter.cc',
       'renderer/java/gin_java_bridge_value_converter.h',
       'renderer/manifest/manifest_manager.cc',
       'renderer/manifest/manifest_manager.h',
       'renderer/manifest/manifest_parser.cc',
-      'renderer/manifest/manifest_parser.h',
       'renderer/manifest/manifest_uma_util.cc',
       'renderer/manifest/manifest_uma_util.h',
       'renderer/media/aec_dump_message_filter.cc',
       'renderer/media/aec_dump_message_filter.h',
       'renderer/media/android/audio_decoder_android.cc',
       'renderer/media/android/audio_decoder_android.h',
       'renderer/media/android/media_info_loader.cc',
       'renderer/media/android/media_info_loader.h',
       'renderer/media/android/media_source_delegate.cc',
       'renderer/media/android/media_source_delegate.h',
@@ skipping 617 matching lines @@
     }],
   ],
   'target_conditions': [
     ['OS=="android"', {
       'sources/': [
         ['include', '^renderer/render_view_linux\\.cc$'],
       ],
     }],
   ],
 }