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

content/common/plugin_constants_win.cc

Index: content/common/plugin_constants_win.cc
diff --git a/content/common/plugin_constants_win.cc b/content/common/plugin_constants_win.cc
index 5f2a5cbf6f1f0e25dbef5bc22c9360f24c9d5a68..9330c8199e61acd4316e93adce5a567fb316be7b 100644
--- a/content/common/plugin_constants_win.cc
+++ b/content/common/plugin_constants_win.cc
@@ -6,13 +6,20 @@
 
 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