Add a method to the controller to close the picker/service tab when a return value is passed.

content/browser/intents/intent_injector.h

Index: content/browser/intents/intent_injector.h
diff --git a/content/browser/intents/intent_injector.h b/content/browser/intents/intent_injector.h
index 6966c8f17ad69a29ac4d40400611e4a297ec299f..ad4298b92998edd78a4259cdb15feef007c85462 100644
--- a/content/browser/intents/intent_injector.h
+++ b/content/browser/intents/intent_injector.h
@@ -26,7 +26,8 @@ class Message;
 // Injects an intent into the renderer of a TabContents. The intent dispatch
 // logic will create one of these to take care of passing intent data down into
 // the context of the service, which will be running in the TabContents on which
-// this class is an observer. Deletes itself when the tab is closed.
+// this class is an observer. Attaches to the service tab and deletes itself
+// when that TabContents is closed.
 class CONTENT_EXPORT IntentInjector : public TabContentsObserver {
  public:
   // |tab_contents| must not be NULL.