Eliminate unnecessary forward declarations from components/password_manager

components/password_manager/core/browser/test_password_store.h

 // Copyright 2014 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_PASSWORD_MANAGER_CORE_BROWSER_TEST_PASSWORD_STORE_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_TEST_PASSWORD_STORE_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "components/password_manager/core/browser/password_store.h"
 
-namespace content {
-class BrowserContext;
-}
-
 namespace password_manager {
 
 // A very simple PasswordStore implementation that keeps all of the passwords
 // in memory and does all its manipulations on the main thread. Since this
 // is only used for testing, only the parts of the interface that are needed
 // for testing have been implemented.
 class TestPasswordStore : public PasswordStore {
  public:
   TestPasswordStore();
 
@@ skipping 47 matching lines @@
 
  private:
   PasswordMap stored_passwords_;
 
   DISALLOW_COPY_AND_ASSIGN(TestPasswordStore);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_TEST_PASSWORD_STORE_H_