Move Render(View|Widget)Host and associated classes to content namespace.

chrome/browser/ui/webui/options2/options_ui2.h

Index: chrome/browser/ui/webui/options2/options_ui2.h
diff --git a/chrome/browser/ui/webui/options2/options_ui2.h b/chrome/browser/ui/webui/options2/options_ui2.h
index 18724ffa37f01d9998248739614309c3598105d7..c715db1e8c86ed9f7d766d81902f43a1c312cc95 100644
--- a/chrome/browser/ui/webui/options2/options_ui2.h
+++ b/chrome/browser/ui/webui/options2/options_ui2.h
@@ -30,8 +30,10 @@ class OptionsUI : public content::WebUIController,
   static RefCountedMemory* GetFaviconResourceBytes();
 
   // WebUIController implementation.
-  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
-  virtual void RenderViewReused(RenderViewHost* render_view_host) OVERRIDE;
+  virtual void RenderViewCreated(
+      content::RenderViewHost* render_view_host) OVERRIDE;
+  virtual void RenderViewReused(
+      content::RenderViewHost* render_view_host) OVERRIDE;
   virtual void DidBecomeActiveForReusedRenderView() OVERRIDE;
 
   // Overridden from OptionsPageUIHandlerHost:
@@ -44,7 +46,7 @@ class OptionsUI : public content::WebUIController,
 
   // Sets the WebUI CommandLineString property with arguments passed while
   // launching chrome.
-  void SetCommandLineString(RenderViewHost* render_view_host);
+  void SetCommandLineString(content::RenderViewHost* render_view_host);
 
   bool initialized_handlers_;