Wiring metro mouse events to aura viewer

ui/aura/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/root_window_host_win.h"
 
 #include <windows.h>
 
 #include <algorithm>
 
@@ skipping 10 matching lines @@
 
 namespace aura {
 
 namespace {
 
 const char* kRootWindowHostWinKey = "__AURA_ROOT_WINDOW_HOST_WIN__";
 
 }  // namespace
 
 // static
-RootWindowHost* RootWindowHost::Create(RootWindowHostDelegate* delegate,
-                                       const gfx::Rect& bounds) {
-  return new RootWindowHostWin(delegate, bounds);
+RootWindowHost* RootWindowHost::Create(const gfx::Rect& bounds) {
+  return new RootWindowHostWin(bounds);
 }
 
 // static
 RootWindowHost* RootWindowHost::GetForAcceleratedWidget(
     gfx::AcceleratedWidget accelerated_widget) {
   return reinterpret_cast<RootWindowHost*>(
       ui::ViewProp::GetValue(accelerated_widget, kRootWindowHostWinKey));
 }
 
 // static
 gfx::Size RootWindowHost::GetNativeScreenSize() {
   return gfx::Size(GetSystemMetrics(SM_CXSCREEN),
                    GetSystemMetrics(SM_CYSCREEN));
 }
 
-RootWindowHostWin::RootWindowHostWin(RootWindowHostDelegate* delegate,
-                                     const gfx::Rect& bounds)
-    : delegate_(delegate),
+RootWindowHostWin::RootWindowHostWin(const gfx::Rect& bounds)
+    : delegate_(NULL),
       fullscreen_(false),
       has_capture_(false),
       saved_window_style_(0),
       saved_window_ex_style_(0) {
   Init(NULL, bounds);
   SetWindowText(hwnd(), L"aura::RootWindow!");
   prop_.reset(new ui::ViewProp(hwnd(), kRootWindowHostWinKey, this));
 }
 
 RootWindowHostWin::~RootWindowHostWin() {
   DestroyWindow(hwnd());
 }
 
+void RootWindowHostWin::SetDelegate(RootWindowHostDelegate* delegate) {
+  delegate_ = delegate;
+}
+
 RootWindow* RootWindowHostWin::GetRootWindow() {
   return delegate_->AsRootWindow();
 }
 
 gfx::AcceleratedWidget RootWindowHostWin::GetAcceleratedWidget() {
   return hwnd();
 }
 
 void RootWindowHostWin::Show() {
   ShowWindow(hwnd(), SW_SHOWNORMAL);
@@ skipping 197 matching lines @@
 }
 
 void RootWindowHostWin::OnSize(UINT param, const CSize& size) {
   // Minimizing resizes the window to 0x0 which causes our layout to go all
   // screwy, so we just ignore it.
   if (param != SIZE_MINIMIZED)
     delegate_->OnHostResized(gfx::Size(size.cx, size.cy));
 }
 
 }  // namespace aura