Make the cursor have separate mode for disabled mouse events and invisible.

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 e503ab349599e00704f5a0132c67bccb94c1b4ee..8cd5528a703fd202da5133eab75c5d381a898d99 100644
--- a/ui/aura/root_window_host_linux.cc
+++ b/ui/aura/root_window_host_linux.cc
@@ -28,7 +28,6 @@
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/client/user_action_client.h"
-#include "ui/aura/env.h"
 #include "ui/aura/root_window.h"
 #include "ui/base/cursor/cursor.h"
 #include "ui/base/events/event.h"
@@ -594,6 +593,13 @@ void RootWindowHostLinux::SetCursor(gfx::NativeCursor cursor) {
 }
 
 bool RootWindowHostLinux::QueryMouseLocation(gfx::Point* location_return) {
+  client::CursorClient* cursor_client =
+      client::GetCursorClient(GetRootWindow());
+  if (cursor_client && !cursor_client->IsCursorEnabled()) {
+    *location_return = gfx::Point(0, 0);
+    return false;
+  }
+
   ::Window root_return, child_return;
   int root_x_return, root_y_return, win_x_return, win_y_return;
   unsigned int mask_return;
@@ -658,11 +664,11 @@ void RootWindowHostLinux::UnConfineCursor() {
 #endif
 }
 
-void RootWindowHostLinux::OnCursorVisibilityChanged(bool show) {
+void RootWindowHostLinux::OnCursorEnableStateChanged(bool enabled) {
 #if defined(OS_CHROMEOS)
   // Temporarily pause tap-to-click when the cursor is hidden.
   Atom prop = atom_cache_.GetAtom("Tap Paused");
-  unsigned char value = !show;
+  unsigned char value = !enabled;
   XIDeviceList dev_list =
       ui::DeviceListCacheX::GetInstance()->GetXI2DeviceList(xdisplay_);