Make Clipboard::FormatType an opaque handle type.

ui/base/clipboard/clipboard.cc

 // Copyright (c) 2011 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/base/clipboard/clipboard.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/size.h"
 
@@ skipping 124 matching lines @@
           *reinterpret_cast<SharedMemory**>(raw_bitmap_data));
 
       if (!ValidateAndMapSharedBitmap(params, bitmap_data.get()))
         return;
       WriteBitmap(static_cast<const char*>(bitmap_data->memory()),
                   &(params[1].front()));
       break;
     }
 
     case CBF_DATA:
-      WriteData(&(params[0].front()), params[0].size(),
-                &(params[1].front()), params[1].size());
+
+      WriteData(
+          StringToFormatType(
+              std::string(&(params[0].front()), params[0].size())),
+          &(params[1].front()),
+          params[1].size());
       break;
 
     default:
       NOTREACHED();
   }
 }
 
 // static
 void Clipboard::ReplaceSharedMemHandle(ObjectMap* objects,
                                        base::SharedMemoryHandle bitmap_handle,
@@ skipping 19 matching lines @@
       // UI thread (see DispatchObject()).
       iter->second[0].clear();
       for (size_t i = 0; i < sizeof(SharedMemory*); ++i)
         iter->second[0].push_back(reinterpret_cast<char*>(&bitmap)[i]);
       has_shared_bitmap = true;
     }
   }
 }
 
 }  // namespace ui