Move Extension into extensions namespace

chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h

Index: chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h
diff --git a/chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h b/chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h
index 2aa918528e5228d7927968cb4958f09d45de30bf..58b36600d15b3fb3ee63fb286843fdd1db8cb840 100644
--- a/chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h
+++ b/chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h
@@ -27,10 +27,13 @@
 
 class Browser;
 class BrowserActionButton;
-class Extension;
 class GtkThemeService;
 class Profile;
 
+namespace extensions {
+class Extension;
+}
+
 typedef struct _GdkDragContext GdkDragContext;
 typedef struct _GtkWidget GtkWidget;
 
@@ -49,7 +52,7 @@ class BrowserActionsToolbarGtk : public ExtensionToolbarModel::Observer,
   // Returns the widget in use by the BrowserActionButton corresponding to
   // |extension|. Used in positioning the ExtensionInstalledBubble for
   // BrowserActions.
-  GtkWidget* GetBrowserActionWidget(const Extension* extension);
+  GtkWidget* GetBrowserActionWidget(const extensions::Extension* extension);
 
   int button_count() { return extension_button_map_.size(); }
 
@@ -87,10 +90,11 @@ class BrowserActionsToolbarGtk : public ExtensionToolbarModel::Observer,
 
   // Create the UI for a single browser action. This will stick the button
   // at the end of the toolbar.
-  void CreateButtonForExtension(const Extension* extension, int index);
+  void CreateButtonForExtension(const extensions::Extension* extension,
+                                int index);
 
   // Delete resources associated with UI for a browser action.
-  void RemoveButtonForExtension(const Extension* extension);
+  void RemoveButtonForExtension(const extensions::Extension* extension);
 
   // Change the visibility of widget() based on whether we have any buttons
   // to show.
@@ -106,13 +110,14 @@ class BrowserActionsToolbarGtk : public ExtensionToolbarModel::Observer,
   // Returns true if this extension should be shown in this toolbar. This can
   // return false if we are in an incognito window and the extension is disabled
   // for incognito.
-  bool ShouldDisplayBrowserAction(const Extension* extension);
+  bool ShouldDisplayBrowserAction(const extensions::Extension* extension);
 
   // ExtensionToolbarModel::Observer implementation.
-  virtual void BrowserActionAdded(const Extension* extension,
+  virtual void BrowserActionAdded(const extensions::Extension* extension,
                                   int index) OVERRIDE;
-  virtual void BrowserActionRemoved(const Extension* extension) OVERRIDE;
-  virtual void BrowserActionMoved(const Extension* extension,
+  virtual void BrowserActionRemoved(
+      const extensions::Extension* extension) OVERRIDE;
+  virtual void BrowserActionMoved(const extensions::Extension* extension,
                                   int index) OVERRIDE;
   virtual void ModelLoaded() OVERRIDE;