Prepare for removing some dead scrolling paths

content/renderer/pepper/pepper_plugin_instance_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 738 matching lines @@
                                           int dy,
                                           const gfx::Rect& rect) {
   cc::Layer* layer =
       texture_layer_ ? texture_layer_.get() : compositor_layer_.get();
   if (layer) {
     InvalidateRect(rect);
   } else if (fullscreen_container_) {
     fullscreen_container_->ScrollRect(dx, dy, rect);
   } else {
     if (full_frame_ && !IsViewAccelerated()) {
+#ifdef SCROLL_RECT_REQUIRES_NO_DELTA
+      container_->scrollRect(rect);
+#else
       container_->scrollRect(dx, dy, rect);
+#endif
     } else {
       // Can't do optimized scrolling since there could be other elements on top
       // of us or the view renders via the accelerated compositor which is
       // incompatible with the move and backfill scrolling model.
       InvalidateRect(rect);
     }
   }
 }
 
 void PepperPluginInstanceImpl::CommitBackingTexture() {
@@ skipping 2536 matching lines @@
     // Running out-of-process. Initiate an IPC call to notify the plugin
     // process.
     ppapi::proxy::HostDispatcher* dispatcher =
         ppapi::proxy::HostDispatcher::GetForInstance(pp_instance());
     dispatcher->Send(new PpapiMsg_PPPInstance_HandleDocumentLoad(
         ppapi::API_ID_PPP_INSTANCE, pp_instance(), pending_host_id, data));
   }
 }
 
 }  // namespace content