Remove windowed NPAPI code

content/common/plugin_constants_win.h

Index: content/common/plugin_constants_win.h
diff --git a/content/common/plugin_constants_win.h b/content/common/plugin_constants_win.h
index 2269592d5ae866d5fb428d7986abd4b80d21b056..815cbf4ab95f8f1d63016bc7a62c0e12723ed6f1 100644
--- a/content/common/plugin_constants_win.h
+++ b/content/common/plugin_constants_win.h
@@ -14,20 +14,8 @@
 
 namespace content {
 
-// The window class name for a plugin window.
-extern const base::char16 kNativeWindowClassName[];
-
-// The name of the window class name for the wrapper HWND around the actual
-// plugin window that's used when running in multi-process mode.  This window
-// is created on the browser UI thread.
-extern const base::char16 kWrapperNativeWindowClassName[];
-
 extern const base::char16 kDummyActivationWindowName[];
 
-// The name of the custom window message that the browser uses to tell the
-// plugin process to paint a window.
-extern const base::char16 kPaintMessageName[];
-
 // The name of the registry key which NPAPI plugins update on installation.
 extern const base::char16 kRegistryMozillaPlugins[];