Remove some now unused fullscreen plumbing.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
===================================================================
--- content/renderer/render_view_impl.cc	(revision 113670)
+++ content/renderer/render_view_impl.cc	(working copy)
@@ -627,7 +627,6 @@
     IPC_MESSAGE_HANDLER(ViewMsg_ZoomFactor, OnZoomFactor)
     IPC_MESSAGE_HANDLER(ViewMsg_SetZoomLevelForLoadingURL,
                         OnSetZoomLevelForLoadingURL)
-    IPC_MESSAGE_HANDLER(ViewMsg_ExitFullscreen, OnExitFullscreen)
     IPC_MESSAGE_HANDLER(ViewMsg_SetPageEncoding, OnSetPageEncoding)
     IPC_MESSAGE_HANDLER(ViewMsg_ResetPageEncodingToDefault,
                         OnResetPageEncodingToDefault)
@@ -3720,13 +3719,6 @@
   host_zoom_levels_[url] = zoom_level;
 }
 
-void RenderViewImpl::OnExitFullscreen() {
-  // TODO(darin): Remove this IPC once WebKit has been updated.
-#ifndef WEBKIT_HAS_NEW_FULLSCREEN_API
-  webview()->exitFullscreen();
-#endif
-}
-
 void RenderViewImpl::OnSetPageEncoding(const std::string& encoding_name) {
   webview()->setPageEncoding(WebString::fromUTF8(encoding_name));
 }