Revert of Remove a bunch of NPAPI quirks and related support code

content/common/plugin_constants_win.cc

 // Copyright (c) 2011 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/common/plugin_constants_win.h"
 
 namespace content {
 
+const base::char16 kDummyActivationWindowName[] = L"DummyWindowForActivation";
 const base::char16 kRegistryMozillaPlugins[] = L"SOFTWARE\\MozillaPlugins";
 const base::char16 kMozillaActiveXPlugin[] = L"npmozax.dll";
 const base::char16 kNewWMPPlugin[] = L"np-mswmp.dll";
 const base::char16 kOldWMPPlugin[] = L"npdsplay.dll";
 const base::char16 kYahooApplicationStatePlugin[] = L"npystate.dll";
 const base::char16 kWanWangProtocolHandlerPlugin[] = L"npww.dll";
+const base::char16 kFlashPlugin[] = L"npswf32.dll";
+const base::char16 kAcrobatReaderPlugin[] = L"nppdf32.dll";
+const base::char16 kRealPlayerPlugin[] = L"nppl3260.dll";
+const base::char16 kSilverlightPlugin[] = L"npctrl.dll";
 const base::char16 kJavaPlugin1[] = L"npjp2.dll";
 const base::char16 kJavaPlugin2[] = L"npdeploytk.dll";
+const char kGPUPluginMimeType[] = "application/vnd.google.chrome.gpu-plugin";
+const base::char16 kPluginDummyParentProperty[] = L"NPAPIPluginDummyParent";
 
 }  // namespace content