Indicate user gesture for mouse down/up while pointer locked.

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. 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
@@ skipping 2533 matching lines @@
 }
 
 void WebViewImpl::didNotAcquirePointerLock()
 {
     if (page())
         page()->pointerLockController().didNotAcquirePointerLock();
 }
 
 void WebViewImpl::didLosePointerLock()
 {
+    m_pointerLockGestureToken.clear();
     if (page())
         page()->pointerLockController().didLosePointerLock();
 }
 
 void WebViewImpl::didChangeWindowResizerRect()
 {
     if (mainFrameImpl()->frameView())
         mainFrameImpl()->frameView()->windowResizerRectChanged();
 }
 
@@ skipping 1661 matching lines @@
         m_client->requestPointerUnlock();
 }
 
 bool WebViewImpl::isPointerLocked()
 {
     return m_client && m_client->isPointerLocked();
 }
 
 void WebViewImpl::pointerLockMouseEvent(const WebInputEvent& event)
 {
+    OwnPtr<UserGestureIndicator> gestureIndicator;
     AtomicString eventType;
     switch (event.type) {
     case WebInputEvent::MouseDown:
         eventType = EventTypeNames::mousedown;
+        gestureIndicator = adoptPtr(new UserGestureIndicator(DefinitelyProcessingNewUserGesture));
+        m_pointerLockGestureToken = gestureIndicator->currentToken();
         break;
     case WebInputEvent::MouseUp:
         eventType = EventTypeNames::mouseup;
+        gestureIndicator = adoptPtr(new UserGestureIndicator(m_pointerLockGestureToken.release()));
         break;
     case WebInputEvent::MouseMove:
         eventType = EventTypeNames::mousemove;
         break;
     default:
         ASSERT_NOT_REACHED();
     }
 
     const WebMouseEvent& mouseEvent = static_cast<const WebMouseEvent&>(event);
 
@@ skipping 16 matching lines @@
     const PageScaleConstraints& constraints = m_pageScaleConstraintsSet.pageDefinedConstraints();
 
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return false;
 
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 } // namespace blink