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, 7 insertions, 2 deletions

diff --git a/chrome/browser/ui/ash/ash_init.cc b/chrome/browser/ui/ash/ash_init.cc
index 9462a66..5b55217 100644
--- a/chrome/browser/ui/ash/ash_init.cc
+++ b/chrome/browser/ui/ash/ash_init.cc
@@ -31,6 +31,7 @@
 #include "chrome/browser/ui/ash/ime_controller_chromeos.h"
 #include "chrome/browser/ui/ash/keyboard_brightness_controller_chromeos.h"
 #include "chrome/browser/ui/ash/volume_controller_chromeos.h"
+#include "ui/base/x/x11_util.h"
 #endif
 
 
@@ -48,14 +49,18 @@ void OpenAsh() {
       switches::kAuraHostWindowUseFullscreen);
 
 #if defined(OS_CHROMEOS)
-  if (base::chromeos::IsRunningOnChromeOS())
+  if (base::chromeos::IsRunningOnChromeOS()) {
     use_fullscreen = true;
+    // Hides the cursor outside of the Aura root window. The cursor will be
+    // drawn within the Aura root window, and it'll remain hidden after the
+    // Aura window is closed.
+    ui::HideHostCursor();
+  }
 #endif
 
   if (use_fullscreen) {
     aura::DisplayManager::set_use_fullscreen_host_window(true);
 #if defined(OS_CHROMEOS)
-    aura::RootWindow::set_hide_host_cursor(true);
     // Hide the mouse cursor completely at boot.
     if (!chromeos::UserManager::Get()->IsUserLoggedIn())
       ash::Shell::set_initially_hide_cursor(true);