Move default_plugin from webkit/ to chrome/

chrome/default_plugin/plugin_impl_gtk.h

Index: chrome/default_plugin/plugin_impl_gtk.h
diff --git a/webkit/default_plugin/plugin_impl_gtk.h b/chrome/default_plugin/plugin_impl_gtk.h
similarity index 98%
rename from webkit/default_plugin/plugin_impl_gtk.h
rename to chrome/default_plugin/plugin_impl_gtk.h
index 7e2113be93191a68b2edd6c1d03fc294d240f9ff..ec63218b932ed310fc7778e5c46b97e51c74daa2 100644
--- a/webkit/default_plugin/plugin_impl_gtk.h
+++ b/chrome/default_plugin/plugin_impl_gtk.h
@@ -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_DEFAULT_PLUGIN_PLUGIN_IMPL_GTK_H_
-#define WEBKIT_DEFAULT_PLUGIN_PLUGIN_IMPL_GTK_H_
+#ifndef CHROME_DEFAULT_PLUGIN_PLUGIN_IMPL_GTK_H_
+#define CHROME_DEFAULT_PLUGIN_PLUGIN_IMPL_GTK_H_
 
 #include <string>
 #include <vector>
@@ -280,4 +280,4 @@ class PluginInstallerImpl {
   DISALLOW_COPY_AND_ASSIGN(PluginInstallerImpl);
 };
 
-#endif  // WEBKIT_DEFAULT_PLUGIN_PLUGIN_IMPL_GTK_H_
+#endif  // CHROME_DEFAULT_PLUGIN_PLUGIN_IMPL_GTK_H_