Track which NativeViewIds each render process is allowed to interact with.

chrome/browser/renderer_host/renderer_security_policy.h

Index: chrome/browser/renderer_host/renderer_security_policy.h
===================================================================
--- chrome/browser/renderer_host/renderer_security_policy.h	(revision 14874)
+++ chrome/browser/renderer_host/renderer_security_policy.h	(working copy)
@@ -11,6 +11,7 @@
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
+#include "base/gfx/native_widget_types.h"
 #include "base/lock.h"
 #include "base/singleton.h"
 
@@ -73,6 +74,9 @@
   // Grant this renderer the ability to use DOM UI Bindings.
   void GrantDOMUIBindings(int renderer_id);
 
+  // Grant this renderer the ability to interact with this native view.
+  void GrantNativeViewId(int renderer_id, gfx::NativeViewId view_id);
+
   // Before servicing a renderer's request for a URL, the browser should call
   // this method to determine whether the renderer has the capability to
   // request the URL.
@@ -83,11 +87,14 @@
   // capability to upload the requested file.
   bool CanUploadFile(int renderer_id, const FilePath& file);
 
-  // Returns true of the specified renderer_id has been granted DOMUIBindings.
+  // Returns true if the specified renderer_id has been granted DOMUIBindings.
   // The browser should check this property before assuming the renderer is
   // allowed to use DOMUIBindings.
   bool HasDOMUIBindings(int renderer_id);
 
+  // Returns true if the |renderer_id| can interact with |view_id|.
+  bool HasNativeViewId(int renderer_id, gfx::NativeViewId view_id);
+
  private:
   class SecurityState;