vs2015: avoid narrowing warning in plugin_service_impl

content/browser/plugin_service_impl.cc

Index: content/browser/plugin_service_impl.cc
diff --git a/content/browser/plugin_service_impl.cc b/content/browser/plugin_service_impl.cc
index fa22d3d34e40cdb82acf19b78b46bd6ae7c6507b..382dbbb1328a179d3be8cfdbeb84d393444c8f8b 100644
--- a/content/browser/plugin_service_impl.cc
+++ b/content/browser/plugin_service_impl.cc
@@ -838,8 +838,8 @@ void PluginServiceImpl::AppActivated() {
 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,