Add a unit test that filenames aren't unintentionally converted to URLs.

printing/backend/print_backend_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 "printing/backend/print_backend.h"
 
 #include <objidl.h>
 #include <winspool.h>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 12 matching lines @@
 
 namespace {
 
 HRESULT StreamOnHGlobalToString(IStream* stream, std::string* out) {
   DCHECK(stream);
   DCHECK(out);
   HGLOBAL hdata = NULL;
   HRESULT hr = GetHGlobalFromStream(stream, &hdata);
   if (SUCCEEDED(hr)) {
     DCHECK(hdata);
-    base::win::ScopedHGlobal<char> locked_data(hdata);
+    base::win::ScopedHGlobal<char*> locked_data(hdata);
     out->assign(locked_data.release(), locked_data.Size());
   }
   return hr;
 }
 
 template <class T>
 void GetDeviceCapabilityArray(const wchar_t* printer,
                               const wchar_t* port,
                               WORD id,
                               std::vector<T>* result) {
@@ skipping 317 matching lines @@
   ScopedPrinterHandle printer_handle;
   return printer_handle.OpenPrinter(base::UTF8ToWide(printer_name).c_str());
 }
 
 scoped_refptr<PrintBackend> PrintBackend::CreateInstance(
     const base::DictionaryValue* print_backend_settings) {
   return new PrintBackendWin;
 }
 
 }  // namespace printing