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

chrome/browser/ui/alternate_error_tab_observer.h

Index: chrome/browser/ui/alternate_error_tab_observer.h
diff --git a/chrome/browser/ui/alternate_error_tab_observer.h b/chrome/browser/ui/alternate_error_tab_observer.h
index 1fb1b6acd984932631aacf7aaf4aa3ca512f2cec..da81c744a8067400abc27156840a02b319a52bcb 100644
--- a/chrome/browser/ui/alternate_error_tab_observer.h
+++ b/chrome/browser/ui/alternate_error_tab_observer.h
@@ -27,7 +27,8 @@ class AlternateErrorPageTabObserver : public content::WebContentsObserver,
   Profile* GetProfile() const;
 
   // content::WebContentsObserver overrides:
-  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
+  virtual void RenderViewCreated(
+      content::RenderViewHost* render_view_host) OVERRIDE;
 
   // content::NotificationObserver overrides:
   virtual void Observe(int type,
@@ -41,7 +42,7 @@ class AlternateErrorPageTabObserver : public content::WebContentsObserver,
   GURL GetAlternateErrorPageURL() const;
 
   // Send the alternate error page URL to the renderer.
-  void UpdateAlternateErrorPageURL(RenderViewHost* rvh);
+  void UpdateAlternateErrorPageURL(content::RenderViewHost* rvh);
 
   content::NotificationRegistrar registrar_;
   PrefChangeRegistrar pref_change_registrar_;