Moving coordinate conversion methods from ash/wm to ui/wm.

Re-submit of https://codereview.chromium.org/425363002/

TBR=sky, oshima
BUG=NONE

Review URL: https://codereview.chromium.org/445173002

Cr-Commit-Position: refs/heads/master@{#288449}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288449 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 63 insertions, 0 deletions

diff --git a/ui/wm/core/coordinate_conversion.cc b/ui/wm/core/coordinate_conversion.cc
new file mode 100644
index 0000000..6227b37
--- /dev/null
+++ b/ui/wm/core/coordinate_conversion.cc
@@ -0,0 +1,29 @@
+// Copyright 2014 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/wm/core/coordinate_conversion.h"
+
+#include "ui/aura/client/screen_position_client.h"
+#include "ui/gfx/point.h"
+
+namespace wm {
+
+void ConvertPointToScreen(const aura::Window* window, gfx::Point* point) {
+  DCHECK(window);
+  DCHECK(window->GetRootWindow());
+  DCHECK(aura::client::GetScreenPositionClient(window->GetRootWindow()));
+  aura::client::GetScreenPositionClient(window->GetRootWindow())->
+      ConvertPointToScreen(window, point);
+}
+
+void ConvertPointFromScreen(const aura::Window* window,
+                            gfx::Point* point_in_screen) {
+  DCHECK(window);
+  DCHECK(window->GetRootWindow());
+  DCHECK(aura::client::GetScreenPositionClient(window->GetRootWindow()));
+  aura::client::GetScreenPositionClient(window->GetRootWindow())->
+      ConvertPointFromScreen(window, point_in_screen);
+}
+
+}  // namespace wm
diff --git a/ui/wm/core/coordinate_conversion.h b/ui/wm/core/coordinate_conversion.h
new file mode 100644
index 0000000..acc6a46
--- /dev/null
+++ b/ui/wm/core/coordinate_conversion.h
@@ -0,0 +1,32 @@
+// Copyright 2014 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.
+
+#ifndef UI_WM_CORE_COORDINATE_CONVERSION_H_
+#define UI_WM_CORE_COORDINATE_CONVERSION_H_
+
+#include "ui/wm/wm_export.h"
+
+namespace aura {
+class Window;
+}  // namespace aura
+
+namespace gfx {
+class Point;
+}  // namespace gfx
+
+namespace wm {
+
+// Converts the |point| from a given |window|'s coordinates into the screen
+// coordinates.
+WM_EXPORT void ConvertPointToScreen(const aura::Window* window,
+                                    gfx::Point* point);
+
+// Converts the |point| from the screen coordinates to a given |window|'s
+// coordinates.
+WM_EXPORT void ConvertPointFromScreen(const aura::Window* window,
+                                      gfx::Point* point_in_screen);
+
+}  // namespace wm
+
+#endif  // UI_WM_CORE_COORDINATE_CONVERSION_H_
diff --git a/ui/wm/wm.gyp b/ui/wm/wm.gyp
index 6a0c928..cfdc937 100644
--- a/ui/wm/wm.gyp
+++ b/ui/wm/wm.gyp
@@ -37,6 +37,8 @@
         'core/capture_controller.h',
         'core/compound_event_filter.cc',
         'core/compound_event_filter.h',
+        'core/coordinate_conversion.cc',
+        'core/coordinate_conversion.h',
         'core/cursor_manager.cc',
         'core/cursor_manager.h',
         'core/default_activation_client.cc',