Move Extension into extensions namespace

chrome/browser/task_manager/task_manager_resource_providers.h

Index: chrome/browser/task_manager/task_manager_resource_providers.h
diff --git a/chrome/browser/task_manager/task_manager_resource_providers.h b/chrome/browser/task_manager/task_manager_resource_providers.h
index 721e3ecce5c10b19b2782cea292d973dbe3634ab..612a5cafefb4504fcd6512f8fc041240b4d9626f 100644
--- a/chrome/browser/task_manager/task_manager_resource_providers.h
+++ b/chrome/browser/task_manager/task_manager_resource_providers.h
@@ -21,13 +21,16 @@
 
 class BackgroundContents;
 class BalloonHost;
-class Extension;
 class TabContentsWrapper;
 
 namespace content {
 class RenderViewHost;
 }
 
+namespace extensions {
+class Extension;
+}
+
 // These file contains the resource providers used in the task manager.
 
 // Base class for various types of render process resources that provides common
@@ -112,7 +115,7 @@ class TaskManagerTabContentsResource : public TaskManagerRendererResource {
   virtual string16 GetProfileName() const OVERRIDE;
   virtual SkBitmap GetIcon() const OVERRIDE;
   virtual TabContentsWrapper* GetTabContents() const OVERRIDE;
-  virtual const Extension* GetExtension() const OVERRIDE;
+  virtual const extensions::Extension* GetExtension() const OVERRIDE;
 
  private:
   bool IsPrerendering() const;
@@ -358,7 +361,7 @@ class TaskManagerExtensionProcessResource : public TaskManager::Resource {
   virtual void Inspect() const OVERRIDE;
   virtual bool SupportNetworkUsage() const OVERRIDE;
   virtual void SetSupportNetworkUsage() OVERRIDE;
-  virtual const Extension* GetExtension() const OVERRIDE;
+  virtual const extensions::Extension* GetExtension() const OVERRIDE;
 
   // Returns the pid of the extension process.
   int process_id() const { return pid_; }