Move NPAPI implementation out of webkit/plugins/npapi and into content.

content/common/plugin_constants_win.h

Index: content/common/plugin_constants_win.h
===================================================================
--- content/common/plugin_constants_win.h	(revision 212369)
+++ content/common/plugin_constants_win.h	(working copy)
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef WEBKIT_PLUGINS_NPAPI_PLUGIN_CONSTANTS_WIN_H_
-#define WEBKIT_PLUGINS_NPAPI_PLUGIN_CONSTANTS_WIN_H_
+#ifndef CONTENT_COMMON_PLUGIN_CONSTANTS_WIN_H_
+#define CONTENT_COMMON_PLUGIN_CONSTANTS_WIN_H_
 
 #include "base/strings/string16.h"
 
@@ -11,12 +11,8 @@
 #error "Windows-only header"
 #endif
 
-namespace webkit {
-namespace npapi {
+namespace content {
 
-// The window class name for a plugin window.
-extern const 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.
@@ -43,7 +39,6 @@
 
 extern const char kGPUPluginMimeType[];
 
-}  // namespace npapi
-}  // namespace webkit
+}  // namespace content
 
-#endif  // WEBKIT_PLUGINS_NPAPI_PLUGIN_PLUGIN_LIST_H_
+#endif  // CONTENT_COMMON_PLUGIN_CONSTANTS_WIN_H_