Enable script bubble by default on all but mac.

chrome/browser/extensions/component_loader.h

Index: chrome/browser/extensions/component_loader.h
diff --git a/chrome/browser/extensions/component_loader.h b/chrome/browser/extensions/component_loader.h
index 77d5c1740b0a4c2a5f36cfd60a6a08d20743d558..e3f9caa1e99e2a292b234665c8d34f1bdc9a5008 100644
--- a/chrome/browser/extensions/component_loader.h
+++ b/chrome/browser/extensions/component_loader.h
@@ -84,13 +84,6 @@ class ComponentLoader {
   // 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 @@ class ComponentLoader {
 
   PrefChangeRegistrar pref_change_registrar_;
 
-  std::string script_bubble_id_;
-
   DISALLOW_COPY_AND_ASSIGN(ComponentLoader);
 };