Inside of content, prefer SiteInstanceImpl to SiteInstance.

content/browser/frame_host/render_frame_host_factory.h

Index: content/browser/frame_host/render_frame_host_factory.h
diff --git a/content/browser/frame_host/render_frame_host_factory.h b/content/browser/frame_host/render_frame_host_factory.h
index d6eb4908e165c433f38c4d6b688bd1e896882317..0e371d57ef85d4886126ac5451e4b62026984860 100644
--- a/content/browser/frame_host/render_frame_host_factory.h
+++ b/content/browser/frame_host/render_frame_host_factory.h
@@ -19,7 +19,7 @@ class RenderFrameHostDelegate;
 class RenderFrameHostImpl;
 class RenderViewHostImpl;
 class RenderWidgetHostDelegate;
-class SiteInstance;
+class SiteInstanceImpl;
 
 // A factory for creating RenderFrameHosts. There is a global factory function
 // that can be installed for the purposes of testing to provide a specialized
@@ -29,7 +29,7 @@ class CONTENT_EXPORT RenderFrameHostFactory {
   // Creates a new RenderFrameHostImpl using the currently registered factory,
   // or a regular RenderFrameHostImpl if no factory is registered.
   static scoped_ptr<RenderFrameHostImpl> Create(
-      SiteInstance* site_instance,
+      SiteInstanceImpl* site_instance,
       RenderViewHostImpl* render_view_host,
       RenderFrameHostDelegate* delegate,
       RenderWidgetHostDelegate* rwh_delegate,
@@ -49,7 +49,7 @@ class CONTENT_EXPORT RenderFrameHostFactory {
   // You can derive from this class and specify an implementation for this
   // function to create an alternate kind of RenderFrameHostImpl for testing.
   virtual scoped_ptr<RenderFrameHostImpl> CreateRenderFrameHost(
-      SiteInstance* site_instance,
+      SiteInstanceImpl* site_instance,
       RenderViewHostImpl* render_view_host,
       RenderFrameHostDelegate* delegate,
       RenderWidgetHostDelegate* rwh_delegate,