Refactor language detection logic to allow non-static CLD data sources.

components/translate/content/renderer/translate_helper.h

 // Copyright (c) 2011 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_TRANSLATE_CONTENT_RENDERER_TRANSLATE_HELPER_H_
 #define COMPONENTS_TRANSLATE_CONTENT_RENDERER_TRANSLATE_HELPER_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
@@ skipping 226 matching lines @@
   // The states associated with the current translation.
   bool translation_pending_;
   std::string source_lang_;
   std::string target_lang_;
 
   // Time when a page langauge is determined. This is used to know a duration
   // time from showing infobar to requesting translation.
   base::TimeTicks language_determined_time_;
 
   // Provides CLD data for this process.
-  scoped_ptr<RendererCldDataProvider> cld_data_provider_;
+  // The pointer is owned by the global in RendererCldDataProvider and has the
+  // same lifetime as the process itself, so this field is simply a raw pointer
+  // instead of a scoped_ptr.
+  RendererCldDataProvider* cld_data_provider_;
 
   // Whether or not polling for CLD2 data has started.
   bool cld_data_polling_started_;
 
   // Whether or not CancelCldDataPolling has been called.
   bool cld_data_polling_canceled_;
 
   // Whether or not a PageCaptured event arrived prior to CLD data becoming
   // available. If true, deferred_contents_ contains the most recent contents.
   bool deferred_page_capture_;
@@ skipping 17 matching lines @@
 
   // Method factory used to make calls to TranslatePageImpl.
   base::WeakPtrFactory<TranslateHelper> weak_method_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateHelper);
 };
 
 }  // namespace translate
 
 #endif  // COMPONENTS_TRANSLATE_CONTENT_RENDERER_TRANSLATE_HELPER_H_