Remove prefixed EME.

media/base/key_systems_support_uma.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 MEDIA_BASE_KEY_SYSTEMS_SUPPORT_UMA_H_
-#define MEDIA_BASE_KEY_SYSTEMS_SUPPORT_UMA_H_
-
-#include <string>
-
-#include "base/containers/scoped_ptr_hash_map.h"
-
-namespace media {
-
-// Key system support UMA statistics for queried key systems.
-// 1. The key system is queried (with or without a MIME type).
-// 2. The key system is queried with a MIME type.
-// 3. The queried key system is supported (with or without a MIME type). This is
-//    reported when the key system is supported when queried, regardless of
-//    whether a MIME type is specified.
-// 4. The queried key system is supported with a MIME type. This is reported
-//    when the key system is supported when queried without a MIME type
-//    specified.
-// Note: All 4 stats are only reported once per renderer process per key system.
-class KeySystemsSupportUMA {
- public:
-  KeySystemsSupportUMA();
-  ~KeySystemsSupportUMA();
-
-  // Adds a |key_system| for which query/support statistics are reported.
-  // If you use this function to add key system to report, make sure to update
-  // AddKeySystemSupportActions() in tools/metrics/actions/extract_actions.py.
-  void AddKeySystemToReport(const std::string& key_system);
-
-  // Reports that the |key_system| is queried. When |has_type|, also reports
-  // that the |key_system| with a MIME type is queried.
-  void ReportKeySystemQuery(const std::string& key_system, bool has_type);
-
-  // Reports that the queried |key_system| is supported. When |has_type| (a
-  // a MIME type is specified in the query), also reports that the queried
-  // |key_system| is supported with that MIME type.
-  void ReportKeySystemSupport(const std::string& key_system, bool has_type);
-
- private:
-  class Reporter;
-
-  // Returns the Reporter for |key_system|. Returns NULL if |key_system| was not
-  // added for UMA reporting.
-  Reporter* GetReporter(const std::string& key_system);
-
-  // Key system <-> Reporter map.
-  typedef base::ScopedPtrHashMap<std::string, scoped_ptr<Reporter>> Reporters;
-  Reporters reporters_;
-};
-
-}  // namespace media
-
-#endif  // MEDIA_BASE_KEY_SYSTEMS_SUPPORT_UMA_H_