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

chrome/browser/ui/intents/web_intent_picker_model_observer.h

Index: chrome/browser/ui/intents/web_intent_picker_model_observer.h
diff --git a/chrome/browser/ui/intents/web_intent_picker_model_observer.h b/chrome/browser/ui/intents/web_intent_picker_model_observer.h
index 0be08b17509349e8cf66da1dd4ec5a38dc52f9dc..d78bd9dcc17e760969077e4a82e0f0707482d916 100644
--- a/chrome/browser/ui/intents/web_intent_picker_model_observer.h
+++ b/chrome/browser/ui/intents/web_intent_picker_model_observer.h
@@ -6,6 +6,8 @@
 #define CHROME_BROWSER_UI_INTENTS_WEB_INTENT_PICKER_MODEL_OBSERVER_H_
 #pragma once
 
+#include "base/string16.h"
+
 class WebIntentPickerModel;
 
 // Observer for changes to the WebIntentPickerModel.
@@ -19,6 +21,10 @@ class WebIntentPickerModelObserver {
   // Called when the favicon at |index| in |model| has changed.
   virtual void OnFaviconChanged(WebIntentPickerModel* model, size_t index) = 0;
 
+  // Called when the extension with |extension_id| has its icon changed.
+  virtual void OnExtensionIconChanged(WebIntentPickerModel* model,
+                                      const string16& extension_id) = 0;
+
   // Called when the inline disposition should be displayed for |model|.
   virtual void OnInlineDisposition(WebIntentPickerModel* model) = 0;
 };