Don't warp mouse if the cursor is locked.

ash/display/mouse_cursor_event_filter.cc

Index: ash/display/mouse_cursor_event_filter.cc
diff --git a/ash/display/mouse_cursor_event_filter.cc b/ash/display/mouse_cursor_event_filter.cc
index 0ab6f1cff0e09c1580095415b8ae1cf8c11c2050..0dc3f042646bdc20e5ca01897f2a8c5f2d395f71 100644
--- a/ash/display/mouse_cursor_event_filter.cc
+++ b/ash/display/mouse_cursor_event_filter.cc
@@ -5,6 +5,8 @@
 #include "ash/display/mouse_cursor_event_filter.h"
 
 #include "ash/display/display_controller.h"
+#include "ui/aura/cursor_manager.h"
+#include "ui/aura/env.h"
 #include "ui/aura/event.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
@@ -28,7 +30,8 @@ bool MouseCursorEventFilter::PreHandleKeyEvent(aura::Window* target,
 
 bool MouseCursorEventFilter::PreHandleMouseEvent(aura::Window* target,
                                                  aura::MouseEvent* event) {
-  if (event->type() != ui::ET_MOUSE_MOVED)
+  if (event->type() != ui::ET_MOUSE_MOVED ||
+      aura::Env::GetInstance()->cursor_manager()->IsCursorLocked())
     return false;
   aura::RootWindow* current_root = target->GetRootWindow();
   gfx::Point location_in_root(event->location());