[Extensions] Make extension message bubble factory platform-abstract

chrome/browser/extensions/extension_message_bubble_controller.h

Index: chrome/browser/extensions/extension_message_bubble_controller.h
diff --git a/chrome/browser/extensions/extension_message_bubble_controller.h b/chrome/browser/extensions/extension_message_bubble_controller.h
index d932e1dc219d264017a12d47d3b7ef9596bd826c..e56ff0c552acdc21a3f6d502c009cedfd90045ec 100644
--- a/chrome/browser/extensions/extension_message_bubble_controller.h
+++ b/chrome/browser/extensions/extension_message_bubble_controller.h
@@ -59,6 +59,10 @@ class ExtensionMessageBubbleController {
     // Whether to show a list of extensions in the bubble.
     virtual bool ShouldShowExtensionList() const = 0;
 
+    // Returns true if the set of affected extensions should be highlighted in
+    // the toolbar.
+    virtual bool ShouldHighlightExtensions() const = 0;
+
     // In some cases, we want the delegate only to handle a single extension
     // and this sets which extension.
     virtual void RestrictToSingleExtension(const std::string& extension_id);
@@ -101,6 +105,9 @@ class ExtensionMessageBubbleController {
   // Whether to close the bubble when it loses focus.
   virtual bool CloseOnDeactivate();
 
+  // Highlights the affected extensions if appropriate.
+  void HighlightExtensionsIfNecessary();
+
   // Sets up the callbacks and shows the bubble.
   virtual void Show(ExtensionMessageBubble* bubble);