Remove some pass-thrus on RootWindow API in favor of exposing the RootWindowHost again.

ui/aura/remote_root_window_host_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/aura/remote_root_window_host_win.h"
 
 #include <windows.h>
 
 #include <algorithm>
 
@@ skipping 281 matching lines @@
   select_folder_completion_callback_ = on_success;
   failure_callback_ = on_failure;
 
   host_->Send(new MetroViewerHostMsg_DisplaySelectFolder(title));
 }
 
 Window* RemoteRootWindowHostWin::GetAshWindow() {
   return GetRootWindow()->window();
 }
 
-void RemoteRootWindowHostWin::SetDelegate(RootWindowHostDelegate* delegate) {
-  delegate_ = delegate;
-}
-
 RootWindow* RemoteRootWindowHostWin::GetRootWindow() {
   return delegate_->AsRootWindow();
 }
 
 gfx::AcceleratedWidget RemoteRootWindowHostWin::GetAcceleratedWidget() {
   if (remote_window_)
     return remote_window_;
   // Getting here should only happen for ash_unittests.exe and related code.
   return ::GetDesktopWindow();
 }
@@ skipping 84 matching lines @@
   // mouse messages from the viewer which were posted before the SetCursor
   // API executes which messes up the state in the browser. To workaround
   // this we invoke the SetCursor API in the viewer process and ignore
   // mouse messages until we received an ACK from the viewer indicating that
   // the SetCursor operation completed.
   ignore_mouse_moves_until_set_cursor_ack_ = true;
   VLOG(1) << "In MoveCursorTo. Sending IPC";
   host_->Send(new MetroViewerHostMsg_SetCursorPos(location.x(), location.y()));
 }
 
-void RemoteRootWindowHostWin::SetFocusWhenShown(bool focus_when_shown) {
-  NOTIMPLEMENTED();
-}
-
 void RemoteRootWindowHostWin::PostNativeEvent(
     const base::NativeEvent& native_event) {
 }
 
 void RemoteRootWindowHostWin::OnDeviceScaleFactorChanged(
     float device_scale_factor) {
   NOTIMPLEMENTED();
 }
 
 void RemoteRootWindowHostWin::PrepareForShutdown() {
@@ skipping 186 matching lines @@
 }
 
 void RemoteRootWindowHostWin::SetEventFlags(uint32 flags) {
   if (flags == event_flags_)
     return;
   event_flags_ = flags;
   SetVirtualKeyStates(event_flags_);
 }
 
 }  // namespace aura