vs2015: avoid narrowing warning in plugin_service_impl

content/browser/plugin_service_impl.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 "content/browser/plugin_service_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
@@ skipping 820 matching lines @@
 #if defined(OS_MACOSX)
 void PluginServiceImpl::AppActivated() {
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                           base::Bind(&NotifyPluginsOfActivation));
 }
 #elif defined(OS_WIN)
 
 bool GetPluginPropertyFromWindow(
     HWND window, const wchar_t* plugin_atom_property,
     base::string16* plugin_property) {
-  ATOM plugin_atom = reinterpret_cast<ATOM>(
-      GetPropW(window, plugin_atom_property));
+  ATOM plugin_atom = static_cast<ATOM>(
+      reinterpret_cast<uintptr_t>(GetPropW(window, plugin_atom_property)));
   if (plugin_atom != 0) {
     WCHAR plugin_property_local[MAX_PATH] = {0};
     GlobalGetAtomNameW(plugin_atom,
                        plugin_property_local,
                        ARRAYSIZE(plugin_property_local));
     *plugin_property = plugin_property_local;
     return true;
   }
   return false;
 }
@@ skipping 23 matching lines @@
 #endif
 
 bool PluginServiceImpl::PpapiDevChannelSupported(
     BrowserContext* browser_context,
     const GURL& document_url) {
   return content::GetContentClient()->browser()->
       IsPluginAllowedToUseDevChannelAPIs(browser_context, document_url);
 }
 
 }  // namespace content