Start splitting out WebUI into an implementation class and an interface that each page implements...

chrome/browser/ui/webui/uber/uber_ui.h

Index: chrome/browser/ui/webui/uber/uber_ui.h
===================================================================
--- chrome/browser/ui/webui/uber/uber_ui.h	(revision 117388)
+++ chrome/browser/ui/webui/uber/uber_ui.h	(working copy)
@@ -11,19 +11,20 @@
 #include "base/memory/scoped_vector.h"
 #include "base/values.h"
 #include "content/browser/webui/web_ui.h"
+#include "content/public/browser/web_ui_controller.h"
 
 // The WebUI class for the uber page (chrome://chrome). It manages the UI for
 // the uber page (navigation bar and so forth) as well as WebUI objects for
 // pages that appear in the uber page.
-class UberUI : public WebUI {
+class UberUI : public WebUI, public content::WebUIController {
  public:
   explicit UberUI(content::WebContents* contents);
   virtual ~UberUI();
 
-  // WebUI implementation.
-  virtual void OnWebUISend(const GURL& source_url,
-                           const std::string& message,
-                           const ListValue& args) OVERRIDE;
+  // WebUIController implementation.
+  virtual bool OverrideHandleWebUIMessage(const GURL& source_url,
+                                          const std::string& message,
+                                          const ListValue& args) OVERRIDE;
 
   // We forward these to |sub_uis_|.
   virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;