ozone: caca: Fix MouseEvent ctor & add PlatformWindow::SetWindowTitle override

ui/ozone/platform/caca/caca_event_source.cc

 // Copyright 2014 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 "ui/ozone/platform/caca/caca_event_source.h"
 
 #include <caca.h>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 198 matching lines @@
           changed_flags = ModifierFromButton(*event);
           modifier_flags_ |= changed_flags;
         } else {
           modifier_flags_ &= ~changed_flags;
         }
         // On release the button pressed is removed from |modifier_flags_|,
         // but sending the event needs it set.
         flags = modifier_flags_ | changed_flags;
       }
       gfx::PointF location = TranslateLocation(last_cursor_location_, window);
-      ui::MouseEvent mouse_event(type, location, location, EventTimeForNow(),
-                                 flags, changed_flags);
+      ui::MouseEvent mouse_event(type, gfx::Point(), gfx::Point(),
+                                 EventTimeForNow(), flags, changed_flags);
+      mouse_event.set_location_f(location);
+      mouse_event.set_root_location_f(location);
       window->OnCacaEvent(&mouse_event);
       break;
     }
     default:
       NOTIMPLEMENTED();
       break;
   }
 }
 
 }  // namespace ui