Eliminates all ash dependencies from WindowModalityController.

ui/views/corewm/window_util.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/views/corewm/window_util.h"
 
+#include "ui/aura/client/activation_client.h"
+#include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/layer.h"
 
 namespace views {
 namespace corewm {
 
+void ActivateWindow(aura::Window* window) {
+  DCHECK(window);
+  DCHECK(window->GetRootWindow());
+  aura::client::GetActivationClient(window->GetRootWindow())->ActivateWindow(
+      window);
+}
+
+void DeactivateWindow(aura::Window* window) {
+  DCHECK(window);
+  DCHECK(window->GetRootWindow());
+  aura::client::GetActivationClient(window->GetRootWindow())->DeactivateWindow(
+      window);
+}
+
+bool IsActiveWindow(aura::Window* window) {
+  DCHECK(window);
+  if (!window->GetRootWindow())
+    return false;
+  aura::client::ActivationClient* client =
+      aura::client::GetActivationClient(window->GetRootWindow());
+  return client && client->GetActiveWindow() == window;
+}
+
+bool CanActivateWindow(aura::Window* window) {
+  DCHECK(window);
+  if (!window->GetRootWindow())
+    return false;
+  aura::client::ActivationClient* client =
+      aura::client::GetActivationClient(window->GetRootWindow());
+  return client && client->CanActivateWindow(window);
+}
+
+aura::Window* GetActivatableWindow(aura::Window* window) {
+  aura::client::ActivationClient* client =
+      aura::client::GetActivationClient(window->GetRootWindow());
+  return client ? client->GetActivatableWindow(window) : NULL;
+}
+
 void DeepDeleteLayers(ui::Layer* layer) {
   std::vector<ui::Layer*> children = layer->children();
   for (std::vector<ui::Layer*>::const_iterator it = children.begin();
        it != children.end();
        ++it) {
     ui::Layer* child = *it;
     DeepDeleteLayers(child);
   }
   delete layer;
 }
 
 ui::Layer* RecreateWindowLayers(aura::Window* window, bool set_bounds) {
   const gfx::Rect bounds = window->bounds();
   ui::Layer* old_layer = window->RecreateLayer();
   DCHECK(old_layer);
   for (aura::Window::Windows::const_iterator it = window->children().begin();
        it != window->children().end();
        ++it) {
     // Maintain the hierarchy of the detached layers.
     old_layer->Add(RecreateWindowLayers(*it, set_bounds));
   }
   if (set_bounds)
     window->SetBounds(bounds);
   return old_layer;
 }
 
 }  // namespace corewm
 }  // namespace views