Remove prefixed EME.

media/base/key_systems_support_uma.cc

Index: media/base/key_systems_support_uma.cc
diff --git a/media/base/key_systems_support_uma.cc b/media/base/key_systems_support_uma.cc
deleted file mode 100644
index 7ac7a14b43ef2c92d74ee5576d041bda3f27e6ce..0000000000000000000000000000000000000000
--- a/media/base/key_systems_support_uma.cc
+++ /dev/null
@@ -1,133 +0,0 @@
-// 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.
-
-#include "media/base/key_systems_support_uma.h"
-
-#include "base/metrics/histogram.h"
-#include "media/base/key_systems.h"
-
-namespace media {
-
-namespace {
-
-const char kKeySystemSupportUMAPrefix[] = "Media.EME.KeySystemSupport.";
-
-// These values are reported to UMA. Do not change the existing values!
-enum KeySystemSupportStatus {
-  KEY_SYSTEM_QUERIED = 0,
-  KEY_SYSTEM_SUPPORTED = 1,
-  KEY_SYSTEM_WITH_TYPE_QUERIED = 2,
-  KEY_SYSTEM_WITH_TYPE_SUPPORTED = 3,
-  KEY_SYSTEM_SUPPORT_STATUS_COUNT
-};
-
-// Reports an event only once.
-class OneTimeReporter {
- public:
-  OneTimeReporter(const std::string& key_system, KeySystemSupportStatus status);
-  ~OneTimeReporter();
-
-  void Report();
-
- private:
-  bool is_reported_;
-  const std::string key_system_;
-  const KeySystemSupportStatus status_;
-};
-
-OneTimeReporter::OneTimeReporter(const std::string& key_system,
-                                 KeySystemSupportStatus status)
-    : is_reported_(false), key_system_(key_system), status_(status) {
-}
-
-OneTimeReporter::~OneTimeReporter() {}
-
-void OneTimeReporter::Report() {
-  if (is_reported_)
-    return;
-
-  // Not using UMA_HISTOGRAM_ENUMERATION directly because UMA_* macros require
-  // the names to be constant throughout the process' lifetime.
-  base::LinearHistogram::FactoryGet(
-      kKeySystemSupportUMAPrefix + GetKeySystemNameForUMA(key_system_), 1,
-      KEY_SYSTEM_SUPPORT_STATUS_COUNT, KEY_SYSTEM_SUPPORT_STATUS_COUNT + 1,
-      base::Histogram::kUmaTargetedHistogramFlag)->Add(status_);
-
-  is_reported_ = true;
-}
-
-}  // namespace
-
-class KeySystemsSupportUMA::Reporter {
- public:
-  explicit Reporter(const std::string& key_system);
-  ~Reporter();
-
-  void Report(bool has_type, bool is_supported);
-
- private:
-  const std::string key_system_;
-
-  OneTimeReporter call_reporter_;
-  OneTimeReporter call_with_type_reporter_;
-  OneTimeReporter support_reporter_;
-  OneTimeReporter support_with_type_reporter_;
-};
-
-KeySystemsSupportUMA::Reporter::Reporter(const std::string& key_system)
-    : key_system_(key_system),
-      call_reporter_(key_system, KEY_SYSTEM_QUERIED),
-      call_with_type_reporter_(key_system, KEY_SYSTEM_WITH_TYPE_QUERIED),
-      support_reporter_(key_system, KEY_SYSTEM_SUPPORTED),
-      support_with_type_reporter_(key_system, KEY_SYSTEM_WITH_TYPE_SUPPORTED) {}
-
-KeySystemsSupportUMA::Reporter::~Reporter() {}
-
-void KeySystemsSupportUMA::Reporter::Report(bool has_type, bool is_supported) {
-  call_reporter_.Report();
-  if (has_type)
-    call_with_type_reporter_.Report();
-
-  if (!is_supported)
-    return;
-
-  support_reporter_.Report();
-  if (has_type)
-    support_with_type_reporter_.Report();
-}
-
-KeySystemsSupportUMA::KeySystemsSupportUMA() {}
-
-KeySystemsSupportUMA::~KeySystemsSupportUMA() {}
-
-void KeySystemsSupportUMA::AddKeySystemToReport(const std::string& key_system) {
-  DCHECK(!GetReporter(key_system));
-  reporters_.set(key_system, scoped_ptr<Reporter>(new Reporter(key_system)));
-}
-
-void KeySystemsSupportUMA::ReportKeySystemQuery(const std::string& key_system,
-                                                bool has_type) {
-  Reporter* reporter = GetReporter(key_system);
-  if (!reporter)
-    return;
-  reporter->Report(has_type, false);
-}
-
-void KeySystemsSupportUMA::ReportKeySystemSupport(const std::string& key_system,
-                                                  bool has_type) {
-  Reporter* reporter = GetReporter(key_system);
-  if (!reporter)
-    return;
-  reporter->Report(has_type, true);
-}
-
-KeySystemsSupportUMA::Reporter* KeySystemsSupportUMA::GetReporter(
-    const std::string& key_system) {
-  Reporters::iterator reporter = reporters_.find(key_system);
-  if (reporter == reporters_.end())
-    return NULL;
-  return reporter->second;
-}
-
-}  // namespace media