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

chrome/browser/extensions/extension_process_manager.h

Index: chrome/browser/extensions/extension_process_manager.h
diff --git a/chrome/browser/extensions/extension_process_manager.h b/chrome/browser/extensions/extension_process_manager.h
index bbf2109ffaed6da77921a839e61c5abdbfef7788..7a594571e5f45e7b48d21bf2b42f485f3ba0a396 100644
--- a/chrome/browser/extensions/extension_process_manager.h
+++ b/chrome/browser/extensions/extension_process_manager.h
@@ -21,9 +21,9 @@ class Extension;
 class ExtensionHost;
 class GURL;
 class Profile;
-class RenderViewHost;
 
 namespace content {
+class RenderViewHost;
 class SiteInstance;
 };
 
@@ -75,15 +75,15 @@ class ExtensionProcessManager : public content::NotificationObserver {
   virtual content::SiteInstance* GetSiteInstanceForURL(const GURL& url);
 
   // Registers a RenderViewHost as hosting a given extension.
-  void RegisterRenderViewHost(RenderViewHost* render_view_host,
+  void RegisterRenderViewHost(content::RenderViewHost* render_view_host,
                               const Extension* extension);
 
   // Unregisters a RenderViewHost as hosting any extension.
-  void UnregisterRenderViewHost(RenderViewHost* render_view_host);
+  void UnregisterRenderViewHost(content::RenderViewHost* render_view_host);
 
   // Returns all RenderViewHosts that are registered for the specified
   // extension.
-  std::set<RenderViewHost*> GetRenderViewHostsForExtension(
+  std::set<content::RenderViewHost*> GetRenderViewHostsForExtension(
       const std::string& extension_id);
 
   // Returns true if |host| is managed by this process manager.
@@ -144,7 +144,7 @@ class ExtensionProcessManager : public content::NotificationObserver {
 
  private:
   // Contains all extension-related RenderViewHost instances for all extensions.
-  typedef std::set<RenderViewHost*> RenderViewHostSet;
+  typedef std::set<content::RenderViewHost*> RenderViewHostSet;
   RenderViewHostSet all_extension_views_;
 
   // Close the given |host| iff it's a background page.