UMA: use a more frequent upload interval for Chromecast.

components/metrics/metrics_service.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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It is
@@ skipping 323 matching lines @@
   DisableRecording();
 }
 
 void MetricsService::InitializeMetricsRecordingState() {
   InitializeMetricsState();
 
   base::Closure upload_callback =
       base::Bind(&MetricsService::StartScheduledUpload,
                  self_ptr_factory_.GetWeakPtr());
   scheduler_.reset(
-      new MetricsReportingScheduler(upload_callback, is_cellular_callback_));
+      new MetricsReportingScheduler(
+          upload_callback,
+          // MetricsServiceClient outlives MetricsService, and
+          // MetricsReportingScheduler is tied to the lifetime of |this|.
+          base::Bind(&MetricsServiceClient::GetStandardUploadInterval,
+                     base::Unretained(client_))));
 }
 
 void MetricsService::Start() {
   HandleIdleSinceLastTransmission(false);
   EnableRecording();
   EnableReporting();
 }
 
 bool MetricsService::StartIfMetricsReportingEnabled() {
   const bool enabled = state_manager_->IsMetricsReportingEnabled();
@@ skipping 862 matching lines @@
   DCHECK(IsSingleThreaded());
   local_state_->SetBoolean(path, value);
   RecordCurrentState(local_state_);
 }
 
 void MetricsService::RecordCurrentState(PrefService* pref) {
   pref->SetInt64(prefs::kStabilityLastTimestampSec,
                  base::Time::Now().ToTimeT());
 }
 
-void MetricsService::SetConnectionTypeCallback(
-    base::Callback<void(bool*)> is_cellular_callback) {
-  DCHECK(!scheduler_);
-  is_cellular_callback_ = is_cellular_callback;
-}
-
 }  // namespace metrics