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

third_party/WebKit/public/web/WebView.h

Index: third_party/WebKit/public/web/WebView.h
diff --git a/third_party/WebKit/public/web/WebView.h b/third_party/WebKit/public/web/WebView.h
index 0e119a5c3067f2b69247fd22ce05f081f746b22a..d25040cf7bcebc4c889663ece89737b0b2990b08 100644
--- a/third_party/WebKit/public/web/WebView.h
+++ b/third_party/WebKit/public/web/WebView.h
@@ -334,14 +334,6 @@
         float topControlsHeight,
         bool topControlsShrinkLayout) = 0;
 
-    // This is called in OOPIF scenarios when an element contained in a remote
-    // <iframe> is about to enter fullscreen.  The provided WebRemoteFrame
-    // identifies the frame containing the fullscreen element, and its frame
-    // owner corresponds to the HTMLFrameOwnerElement to be fullscreened.
-    // Calling this prepares FullscreenController to enter fullscreen for that
-    // frame owner.
-    virtual void willEnterFullScreen(WebRemoteFrame*) = 0;
-
     // Auto-Resize -----------------------------------------------------------
 
     // In auto-resize mode, the view is automatically adjusted to fit the html