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

chrome/browser/ui/cocoa/web_intent_picker_cocoa.mm

Index: chrome/browser/ui/cocoa/web_intent_picker_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/web_intent_picker_cocoa.mm b/chrome/browser/ui/cocoa/web_intent_picker_cocoa.mm
index 0c67eecd07a075cbdb95d0edae2a75a59be971de..2aab61a1e29ede1fa76753d8c9402f6260111456 100644
--- a/chrome/browser/ui/cocoa/web_intent_picker_cocoa.mm
+++ b/chrome/browser/ui/cocoa/web_intent_picker_cocoa.mm
@@ -122,6 +122,12 @@ void WebIntentPickerCocoa::OnFaviconChanged(WebIntentPickerModel* 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());