MacViews: Implement Tab Dragging

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"
 #import "base/mac/mac_util.h"
@@ skipping 37 matching lines @@
       return ET_MOUSEWHEEL;
     case NSMouseEntered:
       return ET_MOUSE_ENTERED;
     case NSMouseExited:
       return ET_MOUSE_EXITED;
     case NSEventTypeSwipe:
       return ET_SCROLL_FLING_START;
     case NSAppKitDefined:
     case NSSystemDefined:
       return ET_UNKNOWN;
+    case NSEventTypeGesture:
+      DLOG(INFO) << "gesture??";
+      return ET_UNKNOWN;
+    case NSCursorUpdate:
+      DLOG(INFO) << "cursor update?";
+      return ET_UNKNOWN;
+    case NSApplicationDefined:
+      DLOG(INFO) << "application defined?";
+      return ET_UNKNOWN;
     case NSFlagsChanged:
-    case NSApplicationDefined:
     case NSPeriodic:
-    case NSCursorUpdate:
     case NSTabletPoint:
     case NSTabletProximity:
-    case NSEventTypeGesture:
     case NSEventTypeMagnify:
     case NSEventTypeRotate:
     case NSEventTypeBeginGesture:
     case NSEventTypeEndGesture:
       NOTIMPLEMENTED() << type;
       break;
     default:
       NOTIMPLEMENTED() << type;
       break;
   }
@@ skipping 189 matching lines @@
   uint16 return_value;
   [text getCharacters:&return_value];
   return return_value;
 }
 
 bool IsCharFromNative(const base::NativeEvent& native_event) {
   return false;
 }
 
 }  // namespace ui