Move WebDropData to content::DropData and split off conversion function.

content/content_renderer.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     '../jingle/jingle.gyp:jingle_glue',
     '../net/net.gyp:net',
     '../skia/skia.gyp:skia',
     '../third_party/WebKit/public/blink.gyp:blink',
@@ skipping 80 matching lines @@
     'renderer/disambiguation_popup_helper.cc',
     'renderer/disambiguation_popup_helper.h',
     'renderer/dom_automation_controller.cc',
     'renderer/dom_automation_controller.h',
     'renderer/dom_storage/dom_storage_dispatcher.cc',
     'renderer/dom_storage/dom_storage_dispatcher.h',
     'renderer/dom_storage/webstoragearea_impl.cc',
     'renderer/dom_storage/webstoragearea_impl.h',
     'renderer/dom_storage/webstoragenamespace_impl.cc',
     'renderer/dom_storage/webstoragenamespace_impl.h',
+    'renderer/drop_data_builder.cc',
+    'renderer/drop_data_builder.h',
     'renderer/external_popup_menu.cc',
     'renderer/external_popup_menu.h',
     'renderer/gamepad_shared_memory_reader.cc',
     'renderer/gamepad_shared_memory_reader.h',
     'renderer/geolocation_dispatcher.cc',
     'renderer/geolocation_dispatcher.h',
     'renderer/gpu/compositor_output_surface.cc',
     'renderer/gpu/compositor_output_surface.h',
     'renderer/gpu/compositor_software_output_device.cc',
     'renderer/gpu/compositor_software_output_device.h',
@@ skipping 407 matching lines @@
     }],
   ],
   'target_conditions': [
     ['OS=="android"', {
       'sources/': [
         ['include', '^renderer/render_view_linux\\.cc$'],
       ],
     }],
   ],
 }