Set a "metrics_client_id" crash key instead of "guid" on Mac OS X

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 40 matching lines @@
   // Factory function.
   static scoped_ptr<ChromeMetricsServiceClient> Create(
       metrics::MetricsStateManager* state_manager,
       PrefService* local_state);
 
   // Registers local state prefs used by this class.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
   // metrics::MetricsServiceClient:
   void SetMetricsClientId(const std::string& client_id) override;
+  void OnRecordingDisabled() override;
   bool IsOffTheRecordSessionActive() override;
   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(
@@ skipping 109 matching lines @@
   // 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_