Implement ManifestManager to handle manifest in content/

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 3b19fa3896b671fcd89d73ebb4dd2ad2a9d67e6b..d160b5085ce5cb6fad865387570615888806e85c 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -67,6 +67,7 @@
 #include "content/renderer/image_loading_helper.h"
 #include "content/renderer/ime_event_guard.h"
 #include "content/renderer/internal_document_state_data.h"
+#include "content/renderer/manifest/manifest_manager.h"
 #include "content/renderer/media/audio_renderer_mixer_manager.h"
 #include "content/renderer/media/crypto/encrypted_media_player_support_impl.h"
 #include "content/renderer/media/media_stream_dispatcher.h"
@@ -455,6 +456,7 @@ RenderFrameImpl::RenderFrameImpl(RenderViewImpl* render_view, int routing_id)
       geolocation_dispatcher_(NULL),
       push_messaging_dispatcher_(NULL),
       screen_orientation_dispatcher_(NULL),
+      manifest_manager_(NULL),
       accessibility_mode_(AccessibilityModeOff),
       renderer_accessibility_(NULL),
       weak_factory_(this) {
@@ -473,6 +475,8 @@ RenderFrameImpl::RenderFrameImpl(RenderViewImpl* render_view, int routing_id)
 #if defined(ENABLE_NOTIFICATIONS)
   notification_provider_ = new NotificationProvider(this);
 #endif
+
+  manifest_manager_ = new ManifestManager(this);
 }
 
 RenderFrameImpl::~RenderFrameImpl() {
@@ -3211,6 +3215,13 @@ void RenderFrameImpl::postAccessibilityEvent(const blink::WebAXObject& obj,
   HandleWebAccessibilityEvent(obj, event);
 }
 
+void RenderFrameImpl::didChangeManifest(blink::WebLocalFrame* frame)
+{
+  DCHECK(!frame_ || frame_ == frame);
+
+  FOR_EACH_OBSERVER(RenderFrameObserver, observers_, DidChangeManifest());
+}
+
 void RenderFrameImpl::DidPlay(blink::WebMediaPlayer* player) {
   Send(new FrameHostMsg_MediaPlayingNotification(
       routing_id_, reinterpret_cast<int64>(player), player->hasVideo(),