Revert "Refactor code listening to platform events in content/renderer/."

content/renderer/device_sensors/device_light_event_pump_unittest.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 "device_light_event_pump.h"
 
 #include "base/message_loop/message_loop.h"
 #include "content/common/device_sensors/device_light_hardware_buffer.h"
 #include "content/public/test/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 21 matching lines @@
 
  private:
   bool did_change_device_light_;
   DeviceLightData data_;
 
   DISALLOW_COPY_AND_ASSIGN(MockDeviceLightListener);
 };
 
 class DeviceLightEventPumpForTesting : public DeviceLightEventPump {
  public:
-  DeviceLightEventPumpForTesting()
-      : DeviceLightEventPump(0) {}
+  DeviceLightEventPumpForTesting() {}
   virtual ~DeviceLightEventPumpForTesting() {}
 
   void OnDidStart(base::SharedMemoryHandle renderer_handle) {
     DeviceLightEventPump::OnDidStart(renderer_handle);
   }
-  virtual void SendStartMessage() OVERRIDE { }
-  virtual void SendStopMessage() OVERRIDE { }
+  virtual bool SendStartMessage() OVERRIDE { return true; }
+  virtual bool SendStopMessage() OVERRIDE { return true; }
   virtual void FireEvent() OVERRIDE {
     DeviceLightEventPump::FireEvent();
     Stop();
     base::MessageLoop::current()->QuitWhenIdle();
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DeviceLightEventPumpForTesting);
 };
 
@@ skipping 33 matching lines @@
   DeviceLightHardwareBuffer* buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceLightEventPumpTest);
 };
 
 TEST_F(DeviceLightEventPumpTest, DidStartPolling) {
   base::MessageLoopForUI loop;
 
   InitBuffer();
 
-  light_pump()->Start(listener());
+  light_pump()->SetListener(listener());
   light_pump()->OnDidStart(handle());
 
   base::MessageLoop::current()->Run();
 
   const DeviceLightData& received_data = listener()->data();
   EXPECT_TRUE(listener()->did_change_device_light());
   EXPECT_EQ(1, static_cast<double>(received_data.value));
 }
 
 TEST_F(DeviceLightEventPumpTest, DidStartPollingValuesEqual) {
   base::MessageLoopForUI loop;
 
   InitBuffer();
 
-  light_pump()->Start(listener());
+  light_pump()->SetListener(listener());
   light_pump()->OnDidStart(handle());
 
   base::MessageLoop::current()->Run();
 
   const DeviceLightData& received_data = listener()->data();
   EXPECT_TRUE(listener()->did_change_device_light());
   EXPECT_EQ(1, static_cast<double>(received_data.value));
 
   double last_seen_data = received_data.value;
   // Set next value to be same as previous value.
   buffer()->data.value = 1.0;
   listener()->set_did_change_device_light(false);
-
-  // Reset the pump's listener.
-  light_pump()->Start(listener());
-
   base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&DeviceLightEventPumpForTesting::FireEvent,
                  base::Unretained(light_pump())));
   base::MessageLoop::current()->Run();
 
   // No change in device light as present value is same as previous value.
   EXPECT_FALSE(listener()->did_change_device_light());
   EXPECT_EQ(last_seen_data, static_cast<double>(received_data.value));
 }
 
 }  // namespace content