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

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index ad6db03245d9631f211177441bf4873975a71192..c13e70c5a318e77eddb6fa45a73c492229a25469 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -2153,15 +2153,6 @@
     return;
   }
 
-  // If there are multiple widgets on the page (such as when there are
-  // out-of-process iframes), pick the one that should process this event.
-  if (widgetHost->delegate()) {
-    RenderWidgetHostImpl* focusedHost =
-        widgetHost->delegate()->GetFocusedRenderWidgetHost();
-    if (focusedHost)
-      widgetHost = focusedHost;
-  }
-
   // Suppress the escape key up event if necessary.
   if (event.windowsKeyCode == ui::VKEY_ESCAPE && suppressNextEscapeKeyUp_) {
     if (event.type == NativeWebKeyboardEvent::KeyUp)