Extract the handling of the clean exit beacon from MetricsService. The extracted implementation sup…

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 <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 254 matching lines @@
 ChromeMetricsServiceClient::CreateUploader(
     const std::string& server_url,
     const std::string& mime_type,
     const base::Callback<void(int)>& on_upload_complete) {
   return scoped_ptr<metrics::MetricsLogUploader>(
       new metrics::NetMetricsLogUploader(
           g_browser_process->system_request_context(), server_url, mime_type,
           on_upload_complete));
 }
 
+base::string16 ChromeMetricsServiceClient::GetRegistryBackupKey() {
+#if defined(OS_WIN)
+  return L"Software\\" PRODUCT_STRING_PATH L"\\StabilityMetrics";
+#else
+  return base::string16();
+#endif
+}
+
 void ChromeMetricsServiceClient::LogPluginLoadingError(
     const base::FilePath& plugin_path) {
 #if defined(ENABLE_PLUGINS)
   plugin_metrics_provider_->LogPluginLoadingError(plugin_path);
 #else
   NOTREACHED();
 #endif  // defined(ENABLE_PLUGINS)
 }
 
 void ChromeMetricsServiceClient::Initialize() {
@@ skipping 260 matching lines @@
   // Capture the histogram samples.
   if (dumps_with_crash != 0)
     UMA_HISTOGRAM_COUNTS("Chrome.BrowserDumpsWithCrash", dumps_with_crash);
   if (dumps_with_no_crash != 0)
     UMA_HISTOGRAM_COUNTS("Chrome.BrowserDumpsWithNoCrash", dumps_with_no_crash);
   int total_dumps = dumps_with_crash + dumps_with_no_crash;
   if (total_dumps != 0)
     UMA_HISTOGRAM_COUNTS("Chrome.BrowserCrashDumpAttempts", total_dumps);
 }
 #endif  // defined(OS_WIN)