move favicon download code from chrome/ into content/

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 033213d58ab7f5ad72217ad35fabc1ebaa8d6cd5..fd0546bf2748a0397a6d7e9ee2287b360d4d418a 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -71,6 +71,7 @@
 #include "content/renderer/dom_storage/webstoragenamespace_impl.h"
 #include "content/renderer/do_not_track_bindings.h"
 #include "content/renderer/external_popup_menu.h"
+#include "content/renderer/favicon_helper.h"
 #include "content/renderer/geolocation_dispatcher.h"
 #include "content/renderer/gpu/compositor_thread.h"
 #include "content/renderer/gpu/compositor_output_surface.h"
@@ -585,6 +586,7 @@ RenderViewImpl::RenderViewImpl(RenderViewImplParams* params)
       renderer_accessibility_(NULL),
       java_bridge_dispatcher_(NULL),
       mouse_lock_dispatcher_(NULL),
+      favicon_helper_(NULL),
 #if defined(OS_ANDROID)
       body_background_color_(SK_ColorWHITE),
       update_frame_info_scheduled_(false),
@@ -703,6 +705,7 @@ RenderViewImpl::RenderViewImpl(RenderViewImplParams* params)
   devtools_agent_ = new DevToolsAgent(this);
   mouse_lock_dispatcher_ = new RenderViewMouseLockDispatcher(this);
   intents_host_ = new WebIntentsHost(this);
+  favicon_helper_ = new FaviconHelper(this);
 
   // Create renderer_accessibility_ if needed.
   OnSetAccessibilityMode(params->accessibility_mode);
@@ -3480,8 +3483,7 @@ void RenderViewImpl::didReceiveTitle(WebFrame* frame, const WebString& title,
 }
 
 void RenderViewImpl::didChangeIcon(WebFrame* frame, WebIconURL::Type type) {
-  FOR_EACH_OBSERVER(RenderViewObserver, observers_,
-                    DidChangeIcon(frame, type));
+  favicon_helper_->DidChangeIcon(frame, type);
 }
 
 void RenderViewImpl::didFinishDocumentLoad(WebFrame* frame) {