MacViews: Fix missing NSMouseMove in ui::EventTypeFromNative, add test coverage.

ui/events/cocoa/events_mac.mm

 // 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/events/event_utils.h"
 
 #include <Cocoa/Cocoa.h>
 
 #include "base/logging.h"
 #include "base/time/time.h"
@@ skipping 23 matching lines @@
       return ET_MOUSE_PRESSED;
     case NSLeftMouseUp:
     case NSRightMouseUp:
     case NSOtherMouseUp:
       return ET_MOUSE_RELEASED;
     case NSLeftMouseDragged:
     case NSRightMouseDragged:
     case NSOtherMouseDragged:
       return ET_MOUSE_DRAGGED;
     case NSMouseMoved:
+      return ET_MOUSE_MOVED;
     case NSScrollWheel:
       return ET_MOUSEWHEEL;
     case NSMouseEntered:
       return ET_MOUSE_ENTERED;
     case NSMouseExited:
       return ET_MOUSE_EXITED;
     case NSEventTypeSwipe:
       return ET_SCROLL_FLING_START;
     case NSFlagsChanged:
     case NSAppKitDefined:
@@ skipping 169 matching lines @@
 
 const char* CodeFromNative(const base::NativeEvent& native_event) {
   return CodeFromNSEvent(native_event);
 }
 
 uint32 PlatformKeycodeFromNative(const base::NativeEvent& native_event) {
   return native_event.keyCode;
 }
 
 }  // namespace ui