[DevTools] Support device orientation override on device with sensors.

Source/modules/device_orientation/DeviceOrientationController.cpp

 /*
  * Copyright 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
@@ skipping 31 matching lines @@
 {
 }
 
 DeviceOrientationController::~DeviceOrientationController()
 {
     stopUpdating();
 }
 
 void DeviceOrientationController::didChangeDeviceOrientation(DeviceOrientationData* deviceOrientationData)
 {
+    if (m_overrideOrientationData)
+        return;
     dispatchDeviceEvent(DeviceOrientationEvent::create(EventTypeNames::deviceorientation, deviceOrientationData));
 }
 
 const char* DeviceOrientationController::supplementName()
 {
     return "DeviceOrientationController";
 }
 
 DeviceOrientationController& DeviceOrientationController::from(Document& document)
 {
     DeviceOrientationController* controller = static_cast<DeviceOrientationController*>(DocumentSupplement::from(document, supplementName()));
     if (!controller) {
         controller = new DeviceOrientationController(document);
         DocumentSupplement::provideTo(document, supplementName(), adoptPtr(controller));
     }
     return *controller;
 }
 
+DeviceOrientationData* DeviceOrientationController::lastData()
+{
+    return m_overrideOrientationData ? m_overrideOrientationData.get() : DeviceOrientationDispatcher::instance().latestDeviceOrientationData();
+}
+
 bool DeviceOrientationController::hasLastData()
 {
-    return DeviceOrientationDispatcher::instance().latestDeviceOrientationData();
+    return lastData();
 }
 
 PassRefPtr<Event> DeviceOrientationController::getLastEvent()
 {
-    return DeviceOrientationEvent::create(EventTypeNames::deviceorientation,
-        DeviceOrientationDispatcher::instance().latestDeviceOrientationData());
+    return DeviceOrientationEvent::create(EventTypeNames::deviceorientation, lastData());
 }
 
 void DeviceOrientationController::registerWithDispatcher()
 {
     DeviceOrientationDispatcher::instance().addDeviceOrientationController(this);
 }
 
 void DeviceOrientationController::unregisterWithDispatcher()
 {
     DeviceOrientationDispatcher::instance().removeDeviceOrientationController(this);
@@ skipping 21 matching lines @@
         m_hasEventListener = false;
     }
 }
 
 void DeviceOrientationController::didRemoveAllEventListeners(DOMWindow* window)
 {
     stopUpdating();
     m_hasEventListener = false;
 }
 
+void DeviceOrientationController::setOverride(DeviceOrientationData* deviceOrientationData)
+{
+    m_overrideOrientationData.clear();
+    didChangeDeviceOrientation(deviceOrientationData);
+    m_overrideOrientationData = deviceOrientationData;
+}
+
+void DeviceOrientationController::clearOverride()
+{
+    if (!m_overrideOrientationData)
+        return;
+    m_overrideOrientationData.clear();
+    DeviceOrientationData* orientation = lastData();
+    if (orientation)
+        didChangeDeviceOrientation(orientation);
+}
+
 } // namespace WebCore