Move ash specific cursor code to CursorManager.

Main changes are as follows.
- Move the responsibility of managing cursors to ash::CursorManager from aura::RootWindowHostLinux.
- Set the same cursor to all root windows with CursorManager so that cursor is updated properly while dragging across displays
- Introduce CursorLoader class, which implements platform specific cursor loading.
- Add SetDeviceScaleFactor to CursorClient, which sets the device scale factor used for the cursor.

BUG=132862,144756


Review URL: https://chromiumcodereview.appspot.com/10919135

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@156109 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 35 insertions, 0 deletions

diff --git a/ui/base/cursor/cursor_loader_win.h b/ui/base/cursor/cursor_loader_win.h
new file mode 100644
index 0000000..6447283
--- /dev/null
+++ b/ui/base/cursor/cursor_loader_win.h
@@ -0,0 +1,35 @@
+// 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.
+
+#ifndef UI_BASE_CURSOR_CURSOR_LOADER_WIN_H_
+#define UI_BASE_CURSOR_CURSOR_LOADER_WIN_H_
+
+#include "base/compiler_specific.h"
+#include "ui/base/cursor/cursor_loader.h"
+
+namespace ui {
+
+class CursorLoaderWin : public CursorLoader {
+ public:
+  CursorLoaderWin();
+  virtual ~CursorLoaderWin();
+
+  // Overridden from CursorLoader:
+  virtual void LoadImageCursor(int id,
+                               int resource_id,
+                               const gfx::Point& hot) OVERRIDE;
+  virtual void LoadAnimatedCursor(int id,
+                                  int resource_id,
+                                  const gfx::Point& hot,
+                                  int frame_delay_ms) OVERRIDE;
+  virtual void UnloadAll() OVERRIDE;
+  virtual void SetPlatformCursor(gfx::NativeCursor* cursor) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CursorLoaderWin);
+};
+
+}  // namespace ui
+
+#endif  // UI_BASE_CURSOR_CURSOR_LOADER_WIN_H_