clang/win: Fix warnings to prepare for building without -Wno-reorder.

ui/base/dragdrop/os_exchange_data_provider_win.cc

 // 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.
 
 #include "ui/base/dragdrop/os_exchange_data_provider_win.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
@@ skipping 101 matching lines @@
   if (source->ptd) {
     source->ptd =
         static_cast<DVTARGETDEVICE*>(CoTaskMemAlloc(sizeof(DVTARGETDEVICE)));
     *(clone->ptd) = *(source->ptd);
   }
 }
 
 FormatEtcEnumerator::FormatEtcEnumerator(
     DataObjectImpl::StoredData::const_iterator start,
     DataObjectImpl::StoredData::const_iterator end)
-    : ref_count_(0), cursor_(0) {
+    : cursor_(0), ref_count_(0) {
   // Copy FORMATETC data from our source into ourselves.
   while (start != end) {
     FORMATETC* format_etc = new FORMATETC;
     CloneFormatEtc(&(*start)->format_etc, format_etc);
     contents_.push_back(format_etc);
     ++start;
   }
 }
 
 FormatEtcEnumerator::~FormatEtcEnumerator() {
@@ skipping 932 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // OSExchangeData, public:
 
 // static
 OSExchangeData::Provider* OSExchangeData::CreateProvider() {
   return new OSExchangeDataProviderWin();
 }
 
 }  // namespace ui