[Chromecast] Add mock implementation of CastMetricsHelper.

It will be used in multiple places to unit tests metrics recording,
so a separate file has been created rather than having every test
define its own.

BUG=internal b/33482814

Review-Url: https://codereview.chromium.org/2563073002
Cr-Commit-Position: refs/heads/master@{#438036}

chromecast/base/metrics/BUILD.gn

@@ -22,6 +22,8 @@ source_set("test_support") {
   sources = [
     "cast_metrics_test_helper.cc",
     "cast_metrics_test_helper.h",
+    "mock_cast_metrics_helper.cc",
+    "mock_cast_metrics_helper.h",
   ]
 
   public_deps = [
@@ -30,5 +32,6 @@ source_set("test_support") {
 
   deps = [
     "//base",
+    "//testing/gmock",
   ]
 }

chromecast/base/metrics/mock_cast_metrics_helper.cc

+// Copyright 2016 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 "chromecast/base/metrics/mock_cast_metrics_helper.h"
+
+namespace chromecast {
+namespace metrics {
+
+MockCastMetricsHelper::MockCastMetricsHelper() = default;
+
+MockCastMetricsHelper::~MockCastMetricsHelper() = default;
+
+}  // namespace metrics
+}  // namespace chromecast

chromecast/base/metrics/mock_cast_metrics_helper.h

+// Copyright 2016 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 CHROMECAST_BASE_METRICS_MOCK_CAST_METRICS_HELPER_H_
+#define CHROMECAST_BASE_METRICS_MOCK_CAST_METRICS_HELPER_H_
+
+#include "base/macros.h"
+#include "chromecast/base/metrics/cast_metrics_helper.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace chromecast {
+namespace metrics {
+
+class MockCastMetricsHelper : public CastMetricsHelper {
+ public:
+  MockCastMetricsHelper();
+  ~MockCastMetricsHelper() override;
+
+  MOCK_METHOD2(UpdateCurrentAppInfo,
+               void(const std::string& app_id, const std::string& session_id));
+  MOCK_METHOD1(UpdateSDKInfo, void(const std::string& sdk_version));
+  MOCK_METHOD0(LogMediaPlay, void());
+  MOCK_METHOD0(LogMediaPause, void());
+  MOCK_METHOD1(RecordSimpleAction, void(const std::string& action));
+  MOCK_METHOD2(RecordEventWithValue,
+               void(const std::string& action, int value));
+  MOCK_METHOD1(RecordApplicationEvent, void(const std::string& event));
+  MOCK_METHOD2(RecordApplicationEventWithValue,
+               void(const std::string& event, int value));
+  MOCK_METHOD0(LogTimeToFirstPaint, void());
+  MOCK_METHOD0(LogTimeToFirstAudio, void());
+  MOCK_METHOD2(LogTimeToBufferAv,
+               void(BufferingType buffering_type, base::TimeDelta time));
+  MOCK_CONST_METHOD2(GetMetricsNameWithAppName,
+                     std::string(const std::string& prefix,
+                                 const std::string& suffix));
+  MOCK_METHOD1(SetMetricsSink, void(MetricsSink* delegate));
+  MOCK_METHOD1(SetRecordActionCallback,
+               void(const RecordActionCallback& callback));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockCastMetricsHelper);
+};
+
+}  // namespace metrics
+}  // namespace chromecast
+
+#endif  // CHROMECAST_BASE_METRICS_MOCK_CAST_METRICS_HELPER_H_