Remove most content-level dependencies from TranslateManager.

chrome/browser/translate/translate_manager.h

 // Copyright 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_TRANSLATE_TRANSLATE_MANAGER_H_
 #define CHROME_BROWSER_TRANSLATE_TRANSLATE_MANAGER_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/callback_list.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "components/translate/core/common/translate_errors.h"
 
 class GURL;
 class PrefService;
 class TranslateClient;
 class TranslateDriver;
 struct TranslateErrorDetails;
 class TranslateTabHelper;
 
-namespace content {
-class WebContents;
-}
-
 // The TranslateManager class is responsible for showing an info-bar when a page
 // in a language different than the user language is loaded.  It triggers the
 // page translation the user requests.
 // TranslateManager expects its associated TranslateTabHelper to always have a
 // valid WebContents (i.e. the WebContents is never destroyed within the
 // lifetime of TranslateManager).
 
 class TranslateManager {
  public:
   // TranslateTabHelper is expected to outlive the TranslateManager.
@@ skipping 72 matching lines @@
   TranslateTabHelper* translate_tab_helper_;  // Weak.
   TranslateClient* translate_client_;         // Weak.
   TranslateDriver* translate_driver_;  // Weak.
 
   base::WeakPtrFactory<TranslateManager> weak_method_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateManager);
 };
 
 #endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_MANAGER_H_