Pepper and WebKit API change to support a plugin knowing if a scrollbar is an overlay one.

webkit/plugins/ppapi/ppapi_webplugin_impl.cc

Index: webkit/plugins/ppapi/ppapi_webplugin_impl.cc
===================================================================
--- webkit/plugins/ppapi/ppapi_webplugin_impl.cc	(revision 95420)
+++ webkit/plugins/ppapi/ppapi_webplugin_impl.cc	(working copy)
@@ -224,6 +224,14 @@
   instance_->StopFind();
 }
 
+void WebPluginImpl::willStartLiveResize() {
+  instance_->WillStartLiveResize();
+}
+
+void WebPluginImpl::willEndLiveResize() {
+  instance_->WillEndLiveResize();
+}
+
 bool WebPluginImpl::supportsPaginatedPrint() {
   return instance_->SupportsPrintInterface();
 }