Implement pointer lock API for out-of-process iframes.

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

 /*
  * Copyright (C) 2014 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 29 matching lines @@
 #include "core/frame/RemoteFrame.h"
 #include "core/frame/Settings.h"
 #include "core/frame/VisualViewport.h"
 #include "core/input/EventHandler.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/layout/compositing/PaintLayerCompositor.h"
 #include "core/page/ContextMenuController.h"
 #include "core/page/FocusController.h"
 #include "core/page/Page.h"
+#include "core/page/PointerLockController.h"
 #include "platform/KeyboardCodes.h"
 #include "platform/graphics/CompositorMutatorClient.h"
 #include "public/platform/WebFrameScheduler.h"
 #include "public/web/WebWidgetClient.h"
 #include "web/CompositorMutatorImpl.h"
 #include "web/CompositorProxyClientImpl.h"
 #include "web/ContextMenuAllowedScope.h"
 #include "web/WebDevToolsAgentImpl.h"
 #include "web/WebInputEventConversion.h"
 #include "web/WebLocalFrameImpl.h"
@@ skipping 578 matching lines @@
     m_layerTreeView = nullptr;
     m_layerTreeViewClosed = true;
 }
 
 void WebFrameWidgetImpl::didChangeWindowResizerRect()
 {
     if (m_localRoot->frameView())
         m_localRoot->frameView()->windowResizerRectChanged();
 }
 
+void WebFrameWidgetImpl::didAcquirePointerLock()
+{
+    if (page())

[dcheng, 2016/06/04 05:28:56]

Is it actually possible to call this when there's no page()?  I would have
thought that things would have been torn down and callbacks cancelled.

[lfg, 2016/06/06 20:09:43]

No, I don't think it's possible. This check is unnecessary, removed.

+        page()->pointerLockController().didAcquirePointerLock();
+}
+
+void WebFrameWidgetImpl::didNotAcquirePointerLock()
+{
+    if (page())
+        page()->pointerLockController().didNotAcquirePointerLock();
+}
+
+void WebFrameWidgetImpl::didLosePointerLock()
+{
+    if (page())
+        page()->pointerLockController().didLosePointerLock();
+}
+
 void WebFrameWidgetImpl::handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent& event)
 {
     // FIXME: WebWidget doesn't have the method below.
     // m_client->setMouseOverURL(WebURL());
     PageWidgetEventHandler::handleMouseLeave(mainFrame, event);
 }
 
 void WebFrameWidgetImpl::handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent& event)
 {
     // Take capture on a mouse down on a plugin so we can send it mouse events.
@@ skipping 452 matching lines @@
 
 HitTestResult WebFrameWidgetImpl::hitTestResultForRootFramePos(const IntPoint& posInRootFrame)
 {
     IntPoint docPoint(m_localRoot->frame()->view()->rootFrameToContents(posInRootFrame));
     HitTestResult result = m_localRoot->frame()->eventHandler().hitTestResultAtPoint(docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active);
     result.setToShadowHostIfInUserAgentShadowRoot();
     return result;
 }
 
 } // namespace blink