Allow tabCapture API to be granted for chrome:// pages.

chrome/browser/extensions/active_tab_permission_granter.h

 // Copyright (c) 2012 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_EXTENSIONS_ACTIVE_TAB_PERMISSION_GRANTER_H_
 #define CHROME_BROWSER_EXTENSIONS_ACTIVE_TAB_PERMISSION_GRANTER_H_
 
 #include <set>
 #include <string>
 
@@ skipping 20 matching lines @@
  public:
   ActiveTabPermissionGranter(content::WebContents* web_contents,
                              int tab_id,
                              Profile* profile);
   virtual ~ActiveTabPermissionGranter();
 
   // If |extension| has the activeTab or tabCapture permission, grants
   // tab-specific permissions to it until the next page navigation or refresh.
   void GrantIfRequested(const Extension* extension);
 
-  // Returns true if |extension| has been granted tab-specific permissions
-  // for this tab.
-  bool IsGranted(const Extension* extension);
+  // Check if the tab has the kTabs API permission.
+  static bool IsGrantedForTab(const Extension* extension,
+                              const content::WebContents* web_contents);
 
  private:
   // content::WebContentsObserver implementation.
   virtual void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) OVERRIDE;
   virtual void WebContentsDestroyed(content::WebContents* web_contents)
       OVERRIDE;
 
   // content::NotificationObserver implementation.
@@ skipping 17 matching lines @@
 
   // Listen to extension unloaded notifications.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ActiveTabPermissionGranter);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_ACTIVE_TAB_PERMISSION_GRANTER_H_