Implement the grab/grabbing cursors (for Mac/GTK)....

webkit/glue/webcursor_win.cc

 // Copyright (c) 2010 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 "base/logging.h"
 #include "base/pickle.h"
 #include "grit/webkit_resources.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCursorInfo.h"
 #include "ui/gfx/gdi_util.h"
@@ skipping 78 matching lines @@
     case WebCursorInfo::TypeCopy:
       return MAKEINTRESOURCE(IDC_COPYCUR);
     case WebCursorInfo::TypeNone:
       return IDC_ARROW;
     case WebCursorInfo::TypeNotAllowed:
       return IDC_NO;
     case WebCursorInfo::TypeZoomIn:
       return MAKEINTRESOURCE(IDC_ZOOMIN);
     case WebCursorInfo::TypeZoomOut:
       return MAKEINTRESOURCE(IDC_ZOOMOUT);
+    // TODO(avi): get cursor images for grab/grabbing
+    // http://crbug.com/74699
+    case WebCursorInfo::TypeGrab:
+    case WebCursorInfo::TypeGrabbing:
+      return IDC_ARROW;
   }
   NOTREACHED();
   return NULL;
 }
 
 static bool IsSystemCursorID(LPCWSTR cursor_id) {
   return cursor_id >= IDC_ARROW;  // See WinUser.h
 }
 
 static WebCursorInfo::Type ToCursorType(HCURSOR cursor) {
@@ skipping 122 matching lines @@
 }
 
 void WebCursor::CleanupPlatformData() {
   external_cursor_ = NULL;
 
   if (custom_cursor_) {
     DestroyIcon(custom_cursor_);
     custom_cursor_ = NULL;
   }
 }