Revert of Add support for entering/exiting HTML fullscreen from OOPIFs.

third_party/WebKit/Source/core/dom/Fullscreen.cpp

Index: third_party/WebKit/Source/core/dom/Fullscreen.cpp
diff --git a/third_party/WebKit/Source/core/dom/Fullscreen.cpp b/third_party/WebKit/Source/core/dom/Fullscreen.cpp
index 58440dd00e87283f85c142f17de4adbca84da24e..e2398d48e5034f604f927bf9099f59b68da460dd 100644
--- a/third_party/WebKit/Source/core/dom/Fullscreen.cpp
+++ b/third_party/WebKit/Source/core/dom/Fullscreen.cpp
@@ -410,7 +410,7 @@
     return fullscreenIsAllowedForAllOwners(document) && fullscreenIsSupported(document);
 }
 
-void Fullscreen::didEnterFullScreenForElement(Element* element, bool isAncestorOfFullscreenElement)
+void Fullscreen::didEnterFullScreenForElement(Element* element)
 {
     DCHECK(element);
     if (!document()->isActive())
@@ -432,20 +432,10 @@
         m_savedPlaceholderComputedStyle = ComputedStyle::clone(layoutObject->styleRef());
     }
 
-    // TODO(alexmos): When |isAncestorOfFullscreenElement| is true, some of
-    // this layout work has already been done in another process, so it should
-    // not be necessary to repeat it here.
     if (m_fullScreenElement != document()->documentElement())
         LayoutFullScreen::wrapLayoutObject(layoutObject, layoutObject ? layoutObject->parent() : 0, document());
 
-    if (isAncestorOfFullscreenElement) {
-        DCHECK(m_fullScreenElement->isFrameOwnerElement());
-        DCHECK(toHTMLFrameOwnerElement(m_fullScreenElement)->contentFrame()->isRemoteFrame());
-        m_fullScreenElement->setContainsFullScreenElement(true);
-    }
-
     m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(true);
-
     document()->styleEngine().ensureFullscreenUAStyle();
     m_fullScreenElement->pseudoStateChanged(CSSSelector::PseudoFullScreen);
 
@@ -460,7 +450,7 @@
     m_eventQueueTimer.startOneShot(0, BLINK_FROM_HERE);
 }
 
-void Fullscreen::didExitFullScreenForElement(bool isAncestorOfFullscreenElement)
+void Fullscreen::didExitFullScreenForElement(Element*)
 {
     if (!m_fullScreenElement)
         return;
@@ -469,9 +459,6 @@
         return;
 
     m_fullScreenElement->willStopBeingFullscreenElement();
-
-    if (isAncestorOfFullscreenElement)
-        m_fullScreenElement->setContainsFullScreenElement(false);
 
     m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(false);