Fix mouse lock on chromeos

content/browser/renderer_host/render_widget_host_view_aura.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 1446 matching lines @@
       NativeWebKeyboardEvent webkit_event(event);
       host_->ForwardKeyboardEvent(webkit_event);
     }
   }
   return ui::ER_HANDLED;
 }
 
 ui::EventResult RenderWidgetHostViewAura::OnMouseEvent(ui::MouseEvent* event) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewAura::OnMouseEvent");
   if (mouse_locked_) {
+    // Hide the cursor if someone else has shown it.
+    aura::client::CursorClient* cursor_client =
+        aura::client::GetCursorClient(window_->GetRootWindow());
+    if (cursor_client && cursor_client->IsCursorVisible())
+      cursor_client->ShowCursor(false);
+
     WebKit::WebMouseEvent mouse_event = MakeWebMouseEvent(event);
     gfx::Point center(gfx::Rect(window_->bounds().size()).CenterPoint());
 
     bool is_move_to_center_event = (event->type() == ui::ET_MOUSE_MOVED ||
         event->type() == ui::ET_MOUSE_DRAGGED) &&
         mouse_event.x == center.x() && mouse_event.y == center.y();
 
     ModifyEventMovementAndCoords(&mouse_event);
 
     bool should_not_forward = is_move_to_center_event && synthetic_move_sent_;
@@ skipping 398 matching lines @@
     RenderWidgetHost* widget) {
   return new RenderWidgetHostViewAura(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content