Add some browser-level checks to prohibit access to extension bindings by...

chrome/browser/child_process_security_policy.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
 #define CHROME_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
 
 #include <string>
 #include <map>
 #include <set>
@@ skipping 60 matching lines @@
   void GrantUploadFile(int renderer_id, const FilePath& file);
 
   // Whenever the browser processes commands the renderer to run web inspector,
   // it should call this method to grant the renderer process the capability to
   // run the inspector.
   void GrantInspectElement(int renderer_id);
 
   // Grant this renderer the ability to use DOM UI Bindings.
   void GrantDOMUIBindings(int renderer_id);
 
+  // Grant this renderer the ability to use extension Bindings.
+  void GrantExtensionBindings(int renderer_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.
   bool CanRequestURL(int renderer_id, const GURL& url);
 
   // Before servicing a renderer's request to upload a file to the web, the
   // browser should call this method to determine whether the renderer has the
   // 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.
   // The browser should check this property before assuming the renderer is
   // allowed to use DOMUIBindings.
   bool HasDOMUIBindings(int renderer_id);
 
+  // Returns true of the specified renderer_id has been granted DOMUIBindings.
+  // The browser should check this property before assuming the renderer is
+  // allowed to use extension bindings.
+  bool HasExtensionBindings(int renderer_id);
+
  private:
   friend class ChildProcessSecurityPolicyInProcessBrowserTest;
   FRIEND_TEST(ChildProcessSecurityPolicyInProcessBrowserTest, NoLeak);
 
   class SecurityState;
 
   typedef std::set<std::string> SchemeSet;
   typedef std::map<int, SecurityState*> SecurityStateMap;
 
   // Obtain an instance of ChildProcessSecurityPolicy via GetInstance().
@@ skipping 16 matching lines @@
   // This map holds a SecurityState for each renderer process.  The key for the
   // map is the ID of the RenderProcessHost.  The SecurityState objects are
   // owned by this object and are protected by |lock_|.  References to them must
   // not escape this class.
   SecurityStateMap security_state_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildProcessSecurityPolicy);
 };
 
 #endif  // CHROME_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_