Move DisplayManager and DisplayChangeObserverX11 from aura to ash.

ui/aura/display_util.cc

Index: ui/aura/display_util.cc
diff --git a/ui/aura/display_util.cc b/ui/aura/display_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..07f6965c5697c12f82f7c51ee3562f8ded445404
--- /dev/null
+++ b/ui/aura/display_util.cc
@@ -0,0 +1,52 @@
+// 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/display_util.h"
+
+#include "ui/aura/root_window_host.h"
+#include "ui/gfx/display.h"
+#include "base/logging.h"
+#include "base/string_number_conversions.h"
+
+namespace aura {
+namespace {
+
+bool use_fullscreen_host_window = false;
+
+// Default bounds for a display.
+const int kDefaultHostWindowX = 200;
+const int kDefaultHostWindowY = 200;
+const int kDefaultHostWindowWidth = 1280;
+const int kDefaultHostWindowHeight = 1024;
+
+}  // namespace
+
+void SetUseFullscreenHostWindow(bool value) {
+  use_fullscreen_host_window = value;
+}
+
+bool UseFullscreenHostWindow() {
+  return use_fullscreen_host_window;
+}
+
+gfx::Display CreateDisplayFromSpec(const std::string& spec) {
+  static int64 synthesized_display_id = 1000;
+  gfx::Rect bounds(kDefaultHostWindowX, kDefaultHostWindowY,
+                   kDefaultHostWindowWidth, kDefaultHostWindowHeight);
+  int x = 0, y = 0, width, height;
+  float scale = 1.0f;
+  if (sscanf(spec.c_str(), "%dx%d*%f", &width, &height, &scale) >= 2 ||
+      sscanf(spec.c_str(), "%d+%d-%dx%d*%f", &x, &y, &width, &height,
+             &scale) >= 4) {
+    bounds.SetRect(x, y, width, height);
+  } else if (use_fullscreen_host_window) {
+    bounds = gfx::Rect(aura::RootWindowHost::GetNativeScreenSize());
+  }
+  gfx::Display display(synthesized_display_id++);
+  display.SetScaleAndBounds(scale, bounds);
+  DVLOG(1) << "Display bounds=" << bounds.ToString() << ", scale=" << scale;
+  return display;
+}
+
+}  // namespace aura