Add support for entering/exiting HTML fullscreen from OOPIFs.

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 176 matching lines @@
         }
     }
 }
 
 void WebFrameWidgetImpl::resizeVisualViewport(const WebSize& newSize)
 {
     // TODO(alexmos, kenrb): resizing behavior such as this should be changed
     // to use Page messages.  https://crbug.com/599688.
     page()->frameHost().visualViewport().setSize(newSize);
     page()->frameHost().visualViewport().clampToBoundaries();
+
+    view()->didUpdateFullScreenSize();

[alexmos, 2016/05/10 21:36:24]

This is needed for things like opening/resizing a devtools page on the side
while in fullscreen mode.

 }
 
 void WebFrameWidgetImpl::updateMainFrameLayoutSize()
 {
     if (!m_localRoot)
         return;
 
     FrameView* view = m_localRoot->frameView();
     if (!view)
         return;
 
     WebSize layoutSize = m_size;
 
     view->setLayoutSize(layoutSize);
 }
 
 void WebFrameWidgetImpl::setIgnoreInputEvents(bool newValue)
 {
     DCHECK_NE(m_ignoreInputEvents, newValue);
     m_ignoreInputEvents = newValue;
 }
 
 void WebFrameWidgetImpl::didEnterFullScreen()
 {
-    // FIXME: Implement full screen for out-of-process iframes.
+    view()->didEnterFullScreen();
 }
 
 void WebFrameWidgetImpl::didExitFullScreen()
 {
-    // FIXME: Implement full screen for out-of-process iframes.
+    view()->didExitFullScreen();
 }
 
 void WebFrameWidgetImpl::beginFrame(double lastFrameTimeMonotonic)
 {
     TRACE_EVENT1("blink", "WebFrameWidgetImpl::beginFrame", "frameTime", lastFrameTimeMonotonic);
     DCHECK(lastFrameTimeMonotonic);
     PageWidgetDelegate::animate(*page(), lastFrameTimeMonotonic);
 }
 
 void WebFrameWidgetImpl::updateAllLifecyclePhases()
@@ skipping 853 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