OOPIF: Replicate allowFullscreen flag.

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 9b931c8f972e72b2a50c95120340873cf7342b7f..4d06826cafd7be9a0e7fac1a7c17382550692824 100644
--- a/third_party/WebKit/Source/core/dom/Fullscreen.cpp
+++ b/third_party/WebKit/Source/core/dom/Fullscreen.cpp
@@ -57,16 +57,7 @@ static bool fullscreenIsAllowedForAllOwners(const Document& document)
         return false;
 
     for (const Frame* frame = document.frame(); frame->owner(); frame = frame->tree().parent()) {
-        // TODO(alexmos): The allowfullscreen attribute will need to be
-        // replicated for this to work with OOPIFs.  For now, deny fullscreen
-        // access inside OOPIFs until https://crbug.com/550497 is fixed.
-        if (frame->owner()->isRemote())
-            return false;
-
-        HTMLFrameOwnerElement* owner = toHTMLFrameOwnerElement(frame->owner());
-        if (!isHTMLIFrameElement(owner))
-            return false;
-        if (!owner->hasAttribute(allowfullscreenAttr))
+        if (!frame->owner()->allowFullscreen())
             return false;
     }
     return true;