aura-x11: Add custom web cursor support.

ui/aura/root_window_host_linux.cc

Index: ui/aura/root_window_host_linux.cc
diff --git a/ui/aura/root_window_host_linux.cc b/ui/aura/root_window_host_linux.cc
index 57f6394bfef26de22d21c9eb358a00656ce8303b..02d75bf08787eaf0db3b981c4de628b2382a8ba1 100644
--- a/ui/aura/root_window_host_linux.cc
+++ b/ui/aura/root_window_host_linux.cc
@@ -152,9 +152,11 @@ int CursorShapeFromNative(gfx::NativeCursor native_cursor) {
     case aura::kCursorZoomOut:
     case aura::kCursorGrab:
     case aura::kCursorGrabbing:
-    case aura::kCursorCustom:
       // TODO(jamescook): Need cursors for these.  crbug.com/111650
       return XC_left_ptr;
+    case aura::kCursorCustom:
+      NOTREACHED();

[sadrul, 2012/02/24 17:38:19]

Too heavy-handed?

[Daniel Erat, 2012/02/24 18:05:47]

No, this seems reasonable to me.

+      return XC_left_ptr;
   }
   NOTREACHED();
   return XC_left_ptr;
@@ -550,6 +552,11 @@ void RootWindowHostLinux::SetCursor(gfx::NativeCursor cursor) {
     SetCursorInternal(cursor);
 }
 
+void RootWindowHostLinux::SetCustomCursor(const gfx::PlatformCursor& cursor) {
+  if (cursor_shown_)
+    XDefineCursor(xdisplay_, xwindow_, cursor);
+}
+
 void RootWindowHostLinux::ShowCursor(bool show) {
   if (show == cursor_shown_)
     return;