Get mouse events to work with win aura, and make the combobox function in the views examples app.

ui/views/widget/desktop_root_window_host_win.cc

Index: ui/views/widget/desktop_root_window_host_win.cc
===================================================================
--- ui/views/widget/desktop_root_window_host_win.cc	(revision 156204)
+++ ui/views/widget/desktop_root_window_host_win.cc	(working copy)
@@ -4,7 +4,11 @@
 
 #include "ui/views/widget/desktop_root_window_host_win.h"
 
+#include "ui/aura/desktop/desktop_activation_client.h"
+#include "ui/aura/desktop/desktop_dispatcher_client.h"
+#include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
+#include "ui/views/widget/desktop_capture_client.h"
 #include "ui/views/win/hwnd_message_handler.h"
 
 namespace views {
@@ -40,13 +44,50 @@
   root_window_->Init();
   root_window_->AddChild(content_window_);
   root_window_host_delegate_ = root_window_.get();
+
+  native_widget_delegate_->OnNativeWidgetCreated();
+
+  capture_client_.reset(new DesktopCaptureClient);
+  aura::client::SetCaptureClient(root_window_.get(), capture_client_.get());
+
+  focus_manager_.reset(new aura::FocusManager);
+  root_window_->set_focus_manager(focus_manager_.get());
+
+  activation_client_.reset(
+      new aura::DesktopActivationClient(root_window_->GetFocusManager()));
+  aura::client::SetActivationClient(root_window_.get(),
+                                    activation_client_.get());
+
+  dispatcher_client_.reset(new aura::DesktopDispatcherClient);
+  aura::client::SetDispatcherClient(root_window_.get(),
+                                    dispatcher_client_.get());
 }
 
+void DesktopRootWindowHostWin::Close() {
+  message_handler_->Close();
+}
+
+void DesktopRootWindowHostWin::CloseNow() {
+  message_handler_->CloseNow();
+}
+
+aura::RootWindowHost* DesktopRootWindowHostWin::AsRootWindowHost() {
+  return this;
+}
+
 void DesktopRootWindowHostWin::ShowWindowWithState(
     ui::WindowShowState show_state) {
   message_handler_->ShowWindowWithState(show_state);
 }
 
+bool DesktopRootWindowHostWin::IsVisible() const {
+  return message_handler_->IsVisible();
+}
+
+gfx::Rect DesktopRootWindowHostWin::GetClientAreaBoundsInScreen() const {
+  return message_handler_->GetClientAreaBoundsInScreen();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopRootWindowHostWin, RootWindowHost implementation:
 
@@ -59,9 +100,11 @@
 }
 
 void DesktopRootWindowHostWin::Show() {
+  message_handler_->Show();
 }
 
 void DesktopRootWindowHostWin::Hide() {
+  message_handler_->Hide();
 }
 
 void DesktopRootWindowHostWin::ToggleFullScreen() {
@@ -254,8 +297,6 @@
   // 2. MouseWheel.
   // 3. Drop target.
   // 4. Tooltip Manager.
-
-  native_widget_delegate_->OnNativeWidgetCreated();
 }
 
 void DesktopRootWindowHostWin::HandleDestroying() {
@@ -289,7 +330,8 @@
 
 void DesktopRootWindowHostWin::HandleClientSizeChanged(
     const gfx::Size& new_size) {
-  root_window_host_delegate_->OnHostResized(new_size);
+  if (root_window_host_delegate_)
+    root_window_host_delegate_->OnHostResized(new_size);
   // TODO(beng): replace with a layout manager??
   content_window_->SetBounds(gfx::Rect(new_size));
 }
@@ -304,7 +346,8 @@
 }
 
 bool DesktopRootWindowHostWin::HandleMouseEvent(const ui::MouseEvent& event) {
-  return false;
+  return root_window_host_delegate_->OnHostMouseEvent(
+      const_cast<ui::MouseEvent*>(&event));
 }
 
 bool DesktopRootWindowHostWin::HandleKeyEvent(const ui::KeyEvent& event) {