UMA: use a more frequent upload interval for Chromecast.

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"
@@ skipping 50 matching lines @@
   int32 GetProduct() override;
   std::string GetApplicationLocale() override;
   bool GetBrand(std::string* brand_code) override;
   metrics::SystemProfileProto::Channel GetChannel() override;
   std::string GetVersionString() override;
   void OnLogUploadComplete() override;
   void StartGatheringMetrics(const base::Closure& done_callback) override;
   void CollectFinalMetrics(const base::Closure& done_callback) override;
   scoped_ptr<metrics::MetricsLogUploader> CreateUploader(
       const base::Callback<void(int)>& on_upload_complete) override;
+  base::TimeDelta GetStandardUploadInterval() override;
   base::string16 GetRegistryBackupKey() override;
 
   metrics::MetricsService* metrics_service() { return metrics_service_.get(); }
 
   void LogPluginLoadingError(const base::FilePath& plugin_path);
 
  private:
   explicit ChromeMetricsServiceClient(
       metrics::MetricsStateManager* state_manager);
 
@@ skipping 83 matching lines @@
   GoogleUpdateMetricsProviderWin* google_update_metrics_provider_;
 #endif
 
   // Callback that is called when initial metrics gathering is complete.
   base::Closure finished_gathering_initial_metrics_callback_;
 
   // The MemoryGrowthTracker instance that tracks memory usage growth in
   // MemoryDetails.
   MemoryGrowthTracker memory_growth_tracker_;
 
+  // Callback to determine whether or not a cellular network is currently being
+  // used.
+  base::Callback<void(bool*)> cellular_callback_;
+
   base::WeakPtrFactory<ChromeMetricsServiceClient> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMetricsServiceClient);
 };
 
 #endif  // CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_