Remove uses of base::hash_map from //chrome

chrome/browser/android/data_usage/data_use_ui_tab_model.h

 // Copyright 2015 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_ANDROID_DATA_USAGE_DATA_USE_UI_TAB_MODEL_H_
 #define CHROME_BROWSER_ANDROID_DATA_USAGE_DATA_USE_UI_TAB_MODEL_H_
 
+#include <map>
 #include <memory>
 #include <string>
 
-#include "base/containers/hash_tables.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "chrome/browser/android/data_usage/data_use_tab_model.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/sessions/core/session_id.h"
 #include "ui/base/page_transition_types.h"
 #include "url/gurl.h"
@@ skipping 107 matching lines @@
           transition_type(transition_type),
           url(url),
           package(package) {}
 
     const SessionID::id_type tab_id;
     const DataUseTabModel::TransitionType transition_type;
     const GURL url;
     const std::string package;
   };
 
-  typedef base::hash_map<SessionID::id_type, DataUseTrackingEvent> TabEvents;
+  typedef std::map<SessionID::id_type, DataUseTrackingEvent> TabEvents;
 
   // DataUseTabModel::TabDataUseObserver implementation:
   void NotifyTrackingStarting(SessionID::id_type tab_id) override;
   void NotifyTrackingEnding(SessionID::id_type tab_id) override;
   void OnDataUseTabModelReady() override;
 
   // Creates |event| for tab with id |tab_id| and value |event|, if there is no
   // existing entry for |tab_id|, and returns true. Otherwise, returns false
   // without modifying the entry.
   bool MaybeCreateTabEvent(SessionID::id_type tab_id,
@@ skipping 46 matching lines @@
   base::WeakPtrFactory<DataUseUITabModel> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DataUseUITabModel);
 };
 
 }  // namespace android
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_ANDROID_DATA_USAGE_DATA_USE_UI_TAB_MODEL_H_