Introduce MetricsServiceClient and ChromeMetricsServiceClient.

In a later CL, MetricsService ctor will take an instance of
MetricsServiceClient.

BUG=374238

Review URL: https://codereview.chromium.org/292693003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271380 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/metrics/chrome_metrics_service_client.cc

+// 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.
+
+#include "chrome/browser/metrics/chrome_metrics_service_client.h"
+
+#include "base/logging.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/google/google_util.h"
+#include "chrome/browser/ui/browser_otr_state.h"
+#include "chrome/common/chrome_version_info.h"
+#include "chrome/common/crash_keys.h"
+
+namespace {
+
+metrics::SystemProfileProto::Channel AsProtobufChannel(
+    chrome::VersionInfo::Channel channel) {
+  switch (channel) {
+    case chrome::VersionInfo::CHANNEL_UNKNOWN:
+      return metrics::SystemProfileProto::CHANNEL_UNKNOWN;
+    case chrome::VersionInfo::CHANNEL_CANARY:
+      return metrics::SystemProfileProto::CHANNEL_CANARY;
+    case chrome::VersionInfo::CHANNEL_DEV:
+      return metrics::SystemProfileProto::CHANNEL_DEV;
+    case chrome::VersionInfo::CHANNEL_BETA:
+      return metrics::SystemProfileProto::CHANNEL_BETA;
+    case chrome::VersionInfo::CHANNEL_STABLE:
+      return metrics::SystemProfileProto::CHANNEL_STABLE;
+  }
+  NOTREACHED();
+  return metrics::SystemProfileProto::CHANNEL_UNKNOWN;
+}
+
+}  // namespace
+
+ChromeMetricsServiceClient::ChromeMetricsServiceClient()
+    : MetricsServiceClient() {
+}
+
+ChromeMetricsServiceClient::~ChromeMetricsServiceClient() {
+}
+
+void ChromeMetricsServiceClient::SetClientID(const std::string& client_id) {
+  crash_keys::SetClientID(client_id);
+}
+
+bool ChromeMetricsServiceClient::IsOffTheRecordSessionActive() {
+  return !chrome::IsOffTheRecordSessionActive();
+}
+
+std::string ChromeMetricsServiceClient::GetApplicationLocale() {
+  return g_browser_process->GetApplicationLocale();
+}
+
+bool ChromeMetricsServiceClient::GetBrand(std::string* brand_code) {
+  return google_util::GetBrand(brand_code);
+}
+
+metrics::SystemProfileProto::Channel ChromeMetricsServiceClient::GetChannel() {
+  return AsProtobufChannel(chrome::VersionInfo::GetChannel());
+}
+
+std::string ChromeMetricsServiceClient::GetVersionString() {
+  // TODO(asvitkine): Move over from metrics_log.cc
+  return std::string();
+}

chrome/browser/metrics/chrome_metrics_service_client.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 CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_
+#define CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "components/metrics/metrics_service_client.h"
+
+// ChromeMetricsServiceClient provides an implementation of MetricsServiceClient
+// that depends on chrome/.
+class ChromeMetricsServiceClient : metrics::MetricsServiceClient {
+ public:
+  ChromeMetricsServiceClient();
+  virtual ~ChromeMetricsServiceClient();
+
+  // metrics::MetricsServiceClient:
+  virtual void SetClientID(const std::string& client_id) OVERRIDE;
+  virtual bool IsOffTheRecordSessionActive() OVERRIDE;
+  virtual std::string GetApplicationLocale() OVERRIDE;
+  virtual bool GetBrand(std::string* brand_code) OVERRIDE;
+  virtual metrics::SystemProfileProto::Channel GetChannel() OVERRIDE;
+  virtual std::string GetVersionString() OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChromeMetricsServiceClient);
+};
+
+#endif  // CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_

chrome/chrome_browser.gypi

@@ -1177,6 +1177,8 @@
         'browser/metrics/chrome_browser_main_extra_parts_metrics.h',
         'browser/metrics/cloned_install_detector.cc',
         'browser/metrics/cloned_install_detector.h',
+        'browser/metrics/chrome_metrics_service_client.cc',
+        'browser/metrics/chrome_metrics_service_client.h',
         'browser/metrics/compression_utils.cc',
         'browser/metrics/compression_utils.h',
         'browser/metrics/extension_metrics.cc',

components/metrics.gypi

@@ -23,6 +23,7 @@
         'metrics/metrics_log_manager.h',
         'metrics/metrics_pref_names.cc',
         'metrics/metrics_pref_names.h',
+        'metrics/metrics_service_client.h',
         'metrics/persisted_logs.cc',
         'metrics/persisted_logs.h',
       ],

components/metrics/metrics_service_client.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_METRICS_METRICS_SERVICE_CLIENT_H_
+#define COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "components/metrics/proto/system_profile.pb.h"
+
+namespace metrics {
+
+// An abstraction of operations that depend on the embedder's (e.g. Chrome)
+// environment.
+class MetricsServiceClient {
+ public:
+  virtual ~MetricsServiceClient() {}
+
+  // Register the client id with other services (e.g. crash reporting), called
+  // when metrics recording gets enabled.
+  virtual void SetClientID(const std::string& client_id) = 0;
+
+  // Whether there's an "off the record" (aka "Incognito") session active.
+  virtual bool IsOffTheRecordSessionActive() = 0;
+
+  // Returns the current application locale (e.g. "en-US").
+  virtual std::string GetApplicationLocale() = 0;
+
+  // Retrieves the brand code string associated with the install, returning
+  // false if no brand code is available.
+  virtual bool GetBrand(std::string* brand_code) = 0;
+
+  // Returns the release channel (e.g. stable, beta, etc) of the application.
+  virtual SystemProfileProto::Channel GetChannel() = 0;
+
+  // Returns the version of the application as a string.
+  virtual std::string GetVersionString() = 0;
+};
+
+}  // namespace metrics
+
+#endif  // COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_