Removes aura dependencies from WindowPositioner

ash/wm/aura/wm_globals_aura.cc

Index: ash/wm/aura/wm_globals_aura.cc
diff --git a/ash/wm/aura/wm_globals_aura.cc b/ash/wm/aura/wm_globals_aura.cc
new file mode 100644
index 0000000000000000000000000000000000000000..daa7082bdc251fe6b78ba03dfb8c01a596d4e0c7
--- /dev/null
+++ b/ash/wm/aura/wm_globals_aura.cc
@@ -0,0 +1,75 @@
+// Copyright 2016 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 "ash/wm/aura/wm_globals_aura.h"
+
+#include "ash/session/session_state_delegate.h"
+#include "ash/shell.h"
+#include "ash/shell_delegate.h"
+#include "ash/wm/aura/wm_window_aura.h"
+#include "ash/wm/mru_window_tracker.h"
+#include "ash/wm/window_util.h"
+#include "ui/wm/public/activation_client.h"
+
+namespace ash {
+namespace wm {
+namespace {
+
+WmGlobalsAura* instance_ = nullptr;
+
+}  // namespace
+
+// static
+WmGlobals* WmGlobals::Get() {
+  return instance_;
+}
+
+WmGlobalsAura::WmGlobalsAura() {
+  DCHECK(!instance_);
+  instance_ = this;
+}
+
+WmGlobalsAura::~WmGlobalsAura() {
+  instance_ = nullptr;
+}
+
+// static
+WmGlobalsAura* WmGlobalsAura::Get() {
+  if (!instance_)
+    new WmGlobalsAura;
+  return instance_;
+}
+
+WmWindow* WmGlobalsAura::GetActiveWindow() {
+  return WmWindowAura::Get(wm::GetActiveWindow());
+}
+
+WmWindow* WmGlobalsAura::GetRootWindowForNewWindows() {
+  return WmWindowAura::Get(Shell::GetTargetRootWindow());
+}
+
+std::vector<WmWindow*> WmGlobalsAura::GetMruWindowListIgnoreModals() {
+  const std::vector<aura::Window*> windows = ash::Shell::GetInstance()
+                                                 ->mru_window_tracker()
+                                                 ->BuildWindowListIgnoreModal();
+  std::vector<WmWindow*> wm_windows(windows.size());
+  for (size_t i = 0; i < windows.size(); ++i)
+    wm_windows[i] = WmWindowAura::Get(windows[i]);
+  return wm_windows;
+}
+
+bool WmGlobalsAura::IsForceMaximizeOnFirstRun() {
+  return Shell::GetInstance()->delegate()->IsForceMaximizeOnFirstRun();
+}
+
+std::vector<WmWindow*> WmGlobalsAura::GetAllRootWindows() {
+  aura::Window::Windows root_windows = Shell::GetAllRootWindows();
+  std::vector<WmWindow*> wm_windows(root_windows.size());
+  for (size_t i = 0; i < root_windows.size(); ++i)
+    wm_windows[i] = WmWindowAura::Get(root_windows[i]);
+  return wm_windows;
+}
+
+}  // namespace wm
+}  // namespace ash