[Web Intents] WebIntentsPickerController will now fetch icon for suggested extensions.

chrome/browser/ui/cocoa/web_intent_picker_cocoa.mm

 // 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.
 
 #include "chrome/browser/ui/cocoa/web_intent_picker_cocoa.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/bind.h"
 #include "base/message_loop.h"
@@ skipping 104 matching lines @@
 void WebIntentPickerCocoa::OnModelChanged(WebIntentPickerModel* model) {
   PerformDelayedLayout();
 }
 
 void WebIntentPickerCocoa::OnFaviconChanged(WebIntentPickerModel* model,
                                             size_t index) {
   // We don't handle individual icon changes - just redo the whole model.
   PerformDelayedLayout();
 }
 
+void WebIntentPickerCocoa::OnExtensionIconChanged(
+    WebIntentPickerModel* model,
+    const string16& extension_id) {
+  // TODO(binji): implement.
+}
+
 void WebIntentPickerCocoa::OnInlineDisposition(WebIntentPickerModel* model) {
   const WebIntentPickerModel::InstalledService& installed_service =
       model->GetInstalledServiceAt(model->inline_disposition_index());
 
   content::WebContents* web_contents = content::WebContents::Create(
       browser_->profile(), NULL, MSG_ROUTING_NONE, NULL, NULL);
   inline_disposition_tab_contents_.reset(new TabContentsWrapper(web_contents));
   inline_disposition_delegate_.reset(new WebIntentInlineDispositionDelegate);
   web_contents->SetDelegate(inline_disposition_delegate_.get());
 
@@ skipping 25 matching lines @@
   const WebIntentPickerModel::InstalledService& installed_service =
       model_->GetInstalledServiceAt(index);
   service_invoked = true;
   delegate_->OnServiceChosen(index, installed_service.disposition);
 }
 
 void WebIntentPickerCocoa::set_controller(
     WebIntentBubbleController* controller) {
   controller_ = controller;
 }