Replace Browser::GetTabContentsAt with GetWebContentsAt and update all callers.

chrome/browser/ui/gtk/tabs/tab_renderer_gtk.h

Index: chrome/browser/ui/gtk/tabs/tab_renderer_gtk.h
===================================================================
--- chrome/browser/ui/gtk/tabs/tab_renderer_gtk.h	(revision 116244)
+++ chrome/browser/ui/gtk/tabs/tab_renderer_gtk.h	(working copy)
@@ -31,9 +31,12 @@
 }  // namespace gfx
 
 class CustomDrawButton;
-class TabContents;
 class GtkThemeService;
 
+namespace content {
+class WebContents;
+}
+
 namespace ui {
 class SlideAnimation;
 class ThrobAnimation;
@@ -106,10 +109,10 @@
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // TabContents. If only the loading state was updated, the loading_only flag
+  // WebContents. If only the loading state was updated, the loading_only flag
   // should be specified. If other things change, set this flag to false to
   // update everything.
-  virtual void UpdateData(TabContents* contents, bool app, bool loading_only);
+  void UpdateData(content::WebContents* contents, bool app, bool loading_only);
 
   // Sets the blocked state of the tab.
   void SetBlocked(bool pinned);