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

content/child/npapi/plugin_instance.h

Index: content/child/npapi/plugin_instance.h
===================================================================
--- content/child/npapi/plugin_instance.h	(revision 0)
+++ content/child/npapi/plugin_instance.h	(working copy)
@@ -5,8 +5,8 @@
 // TODO: Need to deal with NPAPI's NPSavedData.
 //       I haven't seen plugins use it yet.
 
-#ifndef WEBKIT_PLUGINS_NPAPI_PLUGIN_INSTANCE_H_
-#define WEBKIT_PLUGINS_NPAPI_PLUGIN_INSTANCE_H_
+#ifndef CONTENT_CHILD_NPAPI_PLUGIN_INSTANCE_H_
+#define CONTENT_CHILD_NPAPI_PLUGIN_INSTANCE_H_
 
 #include <map>
 #include <stack>
@@ -27,8 +27,7 @@
 class MessageLoop;
 }
 
-namespace webkit {
-namespace npapi {
+namespace content {
 
 class PluginLib;
 class PluginHost;
@@ -368,7 +367,6 @@
 };
 #endif
 
-}  // namespace npapi
-}  // namespace webkit
+}  // namespace content
 
-#endif  // WEBKIT_PLUGINS_NPAPI_PLUGIN_INSTANCE_H_
+#endif  // CONTENT_CHILD_NPAPI_PLUGIN_INSTANCE_H_