One-time reset of UMA client ids and low entropy source.

chrome/browser/metrics/metrics_log_unittest.cc

 // Copyright (c) 2012 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/metrics_log.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/basictypes.h"
@@ skipping 142 matching lines @@
     return *MetricsLog::uma_proto();
   }
 
   const metrics::SystemProfileProto& system_profile() const {
     return uma_proto().system_profile();
   }
 
  private:
   void InitPrefs() {
     prefs_->SetInt64(prefs::kInstallDate, kInstallDate);
-    prefs_->SetString(prefs::kMetricsClientIDTimestamp,
-                     base::Int64ToString(kEnabledDate));
+    prefs_->SetString(prefs::kMetricsReportingEnabledTimestamp,
+                      base::Int64ToString(kEnabledDate));
 #if defined(OS_CHROMEOS)
     prefs_->SetInteger(prefs::kStabilityChildProcessCrashCount, 10);
     prefs_->SetInteger(prefs::kStabilityOtherUserCrashCount, 11);
     prefs_->SetInteger(prefs::kStabilityKernelCrashCount, 12);
     prefs_->SetInteger(prefs::kStabilitySystemUncleanShutdownCount, 13);
 #endif  // OS_CHROMEOS
   }
 
   virtual void GetFieldTrialIds(
       std::vector<chrome_variations::ActiveGroupId>* field_trial_ids) const
@@ skipping 552 matching lines @@
   PairedDevice device2 =
       log.system_profile().hardware().bluetooth().paired_device(1);
 
   EXPECT_EQ(FakeBluetoothDeviceClient::kConfirmPasskeyClass,
             device2.bluetooth_class());
   EXPECT_EQ(PairedDevice::DEVICE_PHONE, device2.type());
   EXPECT_EQ(0x207D74U, device2.vendor_prefix());
   EXPECT_EQ(PairedDevice::VENDOR_ID_UNKNOWN, device2.vendor_id_source());
 }
 #endif  // OS_CHROMEOS