Enable MSVC warning for unused locals.

ui/base/dragdrop/os_exchange_data_win_unittest.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 "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/scoped_hglobal.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/clipboard/clipboard.h"
@@ skipping 31 matching lines @@
   base::win::ScopedComPtr<IDataObject> com_data(
       OSExchangeDataProviderWin::GetIDataObject(data));
 
   // Store data in the object using the COM SetData API.
   CLIPFORMAT cfstr_ineturl = RegisterClipboardFormat(CFSTR_INETURL);
   FORMATETC format_etc =
       { cfstr_ineturl, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
   STGMEDIUM medium;
   medium.tymed = TYMED_HGLOBAL;
   HGLOBAL glob = GlobalAlloc(GPTR, sizeof(wchar_t) * (input.size() + 1));
-  size_t stringsz = input.size();
-  SIZE_T sz = GlobalSize(glob);
   base::win::ScopedHGlobal<wchar_t*> global_lock(glob);
   wchar_t* buffer_handle = global_lock.get();
   wcscpy_s(buffer_handle, input.size() + 1, input.c_str());
   medium.hGlobal = glob;
   medium.pUnkForRelease = NULL;
   EXPECT_EQ(S_OK, com_data->SetData(&format_etc, &medium, TRUE));
 
   // Construct a new object with the old object so that we can use our access
   // APIs.
   OSExchangeData data2(data.provider().Clone());
@@ skipping 16 matching lines @@
       OSExchangeDataProviderWin::GetIDataObject(data));
 
   // Store data in the object using the COM SetData API.
   CLIPFORMAT cfstr_ineturl = RegisterClipboardFormat(CFSTR_INETURL);
   FORMATETC format_etc =
       { cfstr_ineturl, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
   STGMEDIUM medium;
   medium.tymed = TYMED_HGLOBAL;
   {
     HGLOBAL glob = GlobalAlloc(GPTR, sizeof(wchar_t) * (input.size() + 1));
-    size_t stringsz = input.size();
-    SIZE_T sz = GlobalSize(glob);
     base::win::ScopedHGlobal<wchar_t*> global_lock(glob);
     wchar_t* buffer_handle = global_lock.get();
     wcscpy_s(buffer_handle, input.size() + 1, input.c_str());
     medium.hGlobal = glob;
     medium.pUnkForRelease = NULL;
     EXPECT_EQ(S_OK, com_data->SetData(&format_etc, &medium, TRUE));
   }
   // This should clobber the existing data.
   {
     HGLOBAL glob = GlobalAlloc(GPTR, sizeof(wchar_t) * (input2.size() + 1));
-    size_t stringsz = input2.size();
-    SIZE_T sz = GlobalSize(glob);
     base::win::ScopedHGlobal<wchar_t*> global_lock(glob);
     wchar_t* buffer_handle = global_lock.get();
     wcscpy_s(buffer_handle, input2.size() + 1, input2.c_str());
     medium.hGlobal = glob;
     medium.pUnkForRelease = NULL;
     EXPECT_EQ(S_OK, com_data->SetData(&format_etc, &medium, TRUE));
   }
   EXPECT_EQ(1u, static_cast<DataObjectImpl*>(com_data.get())->size());
 
   // Construct a new object with the old object so that we can use our access
@@ skipping 234 matching lines @@
   OSExchangeData data2(data.provider().Clone());
   ASSERT_TRUE(data2.HasURL(OSExchangeData::CONVERT_FILENAMES));
   GURL read_url;
   std::wstring title;
   EXPECT_TRUE(data2.GetURLAndTitle(
       OSExchangeData::CONVERT_FILENAMES, &read_url, &title));
   EXPECT_EQ(GURL("http://google.com"), read_url);
 }
 
 }  // namespace ui