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

content/browser/renderer_host/render_view_host_factory.h

Index: content/browser/renderer_host/render_view_host_factory.h
diff --git a/content/browser/renderer_host/render_view_host_factory.h b/content/browser/renderer_host/render_view_host_factory.h
index ecd151e3c33d63da04c550ab2b18bdea852b89fb..fa33f07a29b85fc949d0c4125d04de8285f2c3a2 100644
--- a/content/browser/renderer_host/render_view_host_factory.h
+++ b/content/browser/renderer_host/render_view_host_factory.h
@@ -9,9 +9,8 @@
 #include "base/basictypes.h"
 #include "content/common/content_export.h"
 
-class RenderViewHost;
-
 namespace content {
+class RenderViewHost;
 class RenderViewHostDelegate;
 class SessionStorageNamespace;
 class SiteInstance;
@@ -25,7 +24,7 @@ class RenderViewHostFactory {
   // Creates a RenderViewHost using the currently registered factory, or the
   // default one if no factory is registered. Ownership of the returned
   // pointer will be passed to the caller.
-  static RenderViewHost* Create(
+  static content::RenderViewHost* Create(
       content::SiteInstance* instance,
       content::RenderViewHostDelegate* delegate,
       int routing_id,
@@ -42,7 +41,7 @@ class RenderViewHostFactory {
 
   // You can derive from this class and specify an implementation for this
   // function to create a different kind of RenderViewHost for testing.
-  virtual RenderViewHost* CreateRenderViewHost(
+  virtual content::RenderViewHost* CreateRenderViewHost(
       content::SiteInstance* instance,
       content::RenderViewHostDelegate* delegate,
       int routing_id,