Initialize PowerMonitor on_power_battery intitial value for newly created processes.

content/browser/power_monitor_message_broadcaster_unittest.cc

 // Copyright 2013 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 "base/test/power_monitor_test_base.h"
 #include "content/browser/power_monitor_message_broadcaster.h"
 #include "content/common/power_monitor_messages.h"
 #include "ipc/ipc_sender.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 51 matching lines @@
   base::PowerMonitorTestSource* power_monitor_source_;
   scoped_ptr<base::PowerMonitor> power_monitor_;
 
   DISALLOW_COPY_AND_ASSIGN(PowerMonitorMessageBroadcasterTest);
 };
 
 TEST_F(PowerMonitorMessageBroadcasterTest, PowerMessageBroadcast) {
   PowerMonitorMessageSender sender;
   PowerMonitorMessageBroadcaster broadcaster(&sender);
 
+  // Calling Init should invoke a power state change.
+  broadcaster.Init();
+  EXPECT_EQ(sender.power_state_changes(), 1);
+
   // Sending resume when not suspended should have no effect.
   source()->GenerateResumeEvent();
   EXPECT_EQ(sender.resumes(), 0);
 
   // Pretend we suspended.
   source()->GenerateSuspendEvent();
   EXPECT_EQ(sender.suspends(), 1);
 
   // Send a second suspend notification.  This should be suppressed.
   source()->GenerateSuspendEvent();
   EXPECT_EQ(sender.suspends(), 1);
 
   // Pretend we were awakened.
   source()->GenerateResumeEvent();
   EXPECT_EQ(sender.resumes(), 1);
 
   // Send a duplicate resume notification.  This should be suppressed.
   source()->GenerateResumeEvent();
   EXPECT_EQ(sender.resumes(), 1);
 
   // Pretend the device has gone on battery power
   source()->GeneratePowerStateEvent(true);
-  EXPECT_EQ(sender.power_state_changes(), 1);
+  EXPECT_EQ(sender.power_state_changes(), 2);
 
   // Repeated indications the device is on battery power should be suppressed.
   source()->GeneratePowerStateEvent(true);
-  EXPECT_EQ(sender.power_state_changes(), 1);
+  EXPECT_EQ(sender.power_state_changes(), 2);
 
   // Pretend the device has gone off battery power
   source()->GeneratePowerStateEvent(false);
-  EXPECT_EQ(sender.power_state_changes(), 2);
+  EXPECT_EQ(sender.power_state_changes(), 3);
 
   // Repeated indications the device is off battery power should be suppressed.
   source()->GeneratePowerStateEvent(false);
-  EXPECT_EQ(sender.power_state_changes(), 2);
+  EXPECT_EQ(sender.power_state_changes(), 3);
 }
 
 }  // namespace base