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

chrome/browser/ui/intents/web_intent_picker_controller.h

Index: chrome/browser/ui/intents/web_intent_picker_controller.h
diff --git a/chrome/browser/ui/intents/web_intent_picker_controller.h b/chrome/browser/ui/intents/web_intent_picker_controller.h
index c5cec6e8dc67f70b62a8b6266003d1e03be8e5ce..a6ed04b8518d8c74e290f16af6e1a953abd6eb8e 100644
--- a/chrome/browser/ui/intents/web_intent_picker_controller.h
+++ b/chrome/browser/ui/intents/web_intent_picker_controller.h
@@ -23,7 +23,6 @@
 
 class Browser;
 class GURL;
-class TabContents;
 class TabContentsWrapper;
 class WebIntentPicker;
 class WebIntentPickerModel;
@@ -33,10 +32,6 @@ class WebContents;
 class WebIntentsDispatcher;
 }
 
-namespace gfx {
-class Image;
-}
-
 namespace webkit_glue {
 struct WebIntentServiceData;
 }
@@ -105,6 +100,25 @@ class WebIntentPickerController : public content::NotificationObserver,
   void OnCWSIntentServicesAvailable(
       const CWSIntentsRegistry::IntentExtensionList& extensions);
 
+  // Called when a suggested extension's icon is fetched.
+  void OnExtensionIconURLFetchComplete(const string16& extension_id,
+                                       const content::URLFetcher* source);
+
+  typedef base::Callback<void(const gfx::Image&)>
+      ExtensionIconAvailableCallback;
+  // Called on a worker thread to decode and resize the extension's icon.
+  static void DecodeExtensionIconAndResize(
+      scoped_ptr<std::string> icon_response,
+      const ExtensionIconAvailableCallback& callback,
+      const base::Closure& unavailable_callback);
+
+  // Called when an extension's icon is successfully decoded and resized.
+  void OnExtensionIconAvailable(const string16& extension_id,
+                                const gfx::Image& icon_image);
+
+  // Called when an extension's icon failed to be decoded or resized.
+  void OnExtensionIconUnavailable(const string16& extension_id);
+
   // Decrements the |pending_async_count_| and notifies the picker if it
   // reaches zero.
   void AsyncOperationFinished();