Revert of OOPIF: Route keyboard events to focused frame in the browser process.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index f866c138d167035c173c9e997937244420004ce0..6b1407b78e0ace939218a24a5478b0c23d48f1c3 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -1590,18 +1590,6 @@
   frame_tree_.ReplicatePageFocus(is_focused);
 }
 
-RenderWidgetHostImpl* WebContentsImpl::GetFocusedRenderWidgetHost() {
-  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())
-    return GetMainFrame()->GetRenderWidgetHost();
-
-  FrameTreeNode* focused_frame = frame_tree_.GetFocusedFrame();
-  if (!focused_frame)
-    return GetMainFrame()->GetRenderWidgetHost();
-
-  return RenderWidgetHostImpl::From(
-      focused_frame->current_frame_host()->GetView()->GetRenderWidgetHost());
-}
-
 void WebContentsImpl::EnterFullscreenMode(const GURL& origin) {
   // This method is being called to enter renderer-initiated fullscreen mode.
   // Make sure any existing fullscreen widget is shut down first.