Remove a bunch of trivial render_view_host_delegate.h includes in chrome.

chrome/browser/extensions/extension_debugger_api.cc

Index: chrome/browser/extensions/extension_debugger_api.cc
===================================================================
--- chrome/browser/extensions/extension_debugger_api.cc	(revision 138257)
+++ chrome/browser/extensions/extension_debugger_api.cc	(working copy)
@@ -33,7 +33,6 @@
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/render_view_host.h"
-#include "content/public/browser/render_view_host_delegate.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_client.h"
 #include "grit/generated_resources.h"
@@ -44,10 +43,10 @@
 using content::DevToolsAgentHostRegistry;
 using content::DevToolsClientHost;
 using content::DevToolsManager;
+using content::WebContents;
 
 namespace keys = extension_debugger_api_constants;
 
-using content::WebContents;
 
 class ExtensionDevToolsInfoBarDelegate : public ConfirmInfoBarDelegate {
  public:
@@ -146,8 +145,7 @@
         continue;
       content::RenderViewHost* rvh =
           DevToolsAgentHostRegistry::GetRenderViewHost(agent_host);
-      if (rvh && rvh->GetDelegate() &&
-          rvh->GetDelegate()->GetAsWebContents() == contents)
+      if (rvh && WebContents::FromRenderViewHost(rvh) == contents)
         return static_cast<ExtensionDevToolsClientHost*>(*it);
     }
     return NULL;