Delete the old extension-based script bubble.

chrome/browser/extensions/component_loader.h

Index: chrome/browser/extensions/component_loader.h
===================================================================
--- chrome/browser/extensions/component_loader.h	(revision 170599)
+++ chrome/browser/extensions/component_loader.h	(working copy)
@@ -84,13 +84,6 @@
   // Reloads a registered component extension.
   void Reload(const std::string& extension_id);
 
-  // Adds the "Script Bubble" component extension, which puts an icon in the
-  // omnibox indiciating the number of extensions running script in a tab.
-  void AddScriptBubble();
-
-  // Returns the extension previously added by AddScriptBubble(), if any.
-  const Extension* GetScriptBubble() const;
-
  private:
   // Information about a registered component extension.
   struct ComponentExtensionInfo {
@@ -136,8 +129,6 @@
 
   PrefChangeRegistrar pref_change_registrar_;
 
-  std::string script_bubble_id_;
-
   DISALLOW_COPY_AND_ASSIGN(ComponentLoader);
 };