Enable CursorManager::LockCursor to lock cursor visibility.

This CL changes mainly three parts:
- Add LockCursor and UnlockCursor to CursorClient.
- Move the code to change cursor visibility from aura::RootWindow and 
   aura::RootWindowHostLinux to ash::CursorManager.
- Remove CursorDelegate, which was too much simple delegation and unnecessary.

BUG=153702
TEST=CursorManagerTest.ShowCursor


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=161454

Review URL: https://chromiumcodereview.appspot.com/11035050

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@161629 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 3 insertions, 3 deletions

diff --git a/ui/aura/root_window_unittest.cc b/ui/aura/root_window_unittest.cc
index 5c8f3f7..20e7cbb 100644
--- a/ui/aura/root_window_unittest.cc
+++ b/ui/aura/root_window_unittest.cc
@@ -189,7 +189,7 @@ TEST_F(RootWindowTest, HideCursor) {
       delegate.get(), -1234, bounds, NULL));
   aura::Window* window_ptr = &*window;
 
-  root_window()->ShowCursor(true);
+  root_window()->OnCursorVisibilityChanged(true);
   // Send a mouse event to window.
   gfx::Point point(101, 201);
   gfx::Point local_point;
@@ -202,14 +202,14 @@ TEST_F(RootWindowTest, HideCursor) {
   EXPECT_TRUE(window->bounds().Contains(local_point));
 
   // Location is now out of window.
-  root_window()->ShowCursor(false);
+  root_window()->OnCursorVisibilityChanged(false);
   RunAllPendingInMessageLoop();
   local_point = delegate->mouse_event_location();
   aura::Window::ConvertPointToTarget(window_ptr, root_window(), &local_point);
   EXPECT_FALSE(window->bounds().Contains(local_point));
 
   // Location is back in window.
-  root_window()->ShowCursor(true);
+  root_window()->OnCursorVisibilityChanged(true);
   RunAllPendingInMessageLoop();
   local_point = delegate->mouse_event_location();
   aura::Window::ConvertPointToTarget(window_ptr, root_window(), &local_point);