Check if precaching is allowed before reporting related metrics

components/precache/content/precache_manager.h

 // Copyright 2013 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 COMPONENTS_PRECACHE_CONTENT_PRECACHE_MANAGER_H_
 #define COMPONENTS_PRECACHE_CONTENT_PRECACHE_MANAGER_H_
 
 #include <list>
 
 #include "base/callback.h"
@@ skipping 31 matching lines @@
  public:
   typedef base::Closure PrecacheCompletionCallback;
 
   explicit PrecacheManager(content::BrowserContext* browser_context);
   virtual ~PrecacheManager();
 
   // Returns true if precaching is enabled as part of a field trial or by the
   // command line flag. This method can be called on any thread.
   static bool IsPrecachingEnabled();
 
+  // Returns true if precaching is allowed for the browser context.
+  bool IsPrecachingAllowed();
+
   // Starts precaching resources that the user is predicted to fetch in the
   // future. If precaching is already currently in progress, then this method
   // does nothing. The |precache_completion_callback| will be run when
   // precaching finishes, but will not be run if precaching is canceled.
   void StartPrecaching(
       const PrecacheCompletionCallback& precache_completion_callback,
       URLListProvider* url_list_provider);
 
   // Cancels precaching if it is in progress.
   void CancelPrecaching();
@@ skipping 33 matching lines @@
 
   // Flag indicating whether or not precaching is currently in progress.
   bool is_precaching_;
 
   DISALLOW_COPY_AND_ASSIGN(PrecacheManager);
 };
 
 }  // namespace precache
 
 #endif  // COMPONENTS_PRECACHE_CONTENT_PRECACHE_MANAGER_H_