Support plumbing LatencyInfo through the old software path.

content/browser/renderer_host/render_widget_host_view_gtk.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_
 
 #include <gdk/gdk.h>
 
 #include <string>
@@ skipping 73 matching lines @@
   virtual void SetIsLoading(bool is_loading) OVERRIDE;
   virtual void TextInputStateChanged(
       const ViewHostMsg_TextInputState_Params& params) OVERRIDE;
   virtual void ImeCancelComposition() OVERRIDE;
   virtual void ImeCompositionRangeChanged(
       const ui::Range& range,
       const std::vector<gfx::Rect>& character_bounds) OVERRIDE;
   virtual void DidUpdateBackingStore(
       const gfx::Rect& scroll_rect,
       const gfx::Vector2d& scroll_delta,
-      const std::vector<gfx::Rect>& copy_rects) OVERRIDE;
+      const std::vector<gfx::Rect>& copy_rects,
+      const ui::LatencyInfo& latency_info) OVERRIDE;
   virtual void RenderViewGone(base::TerminationStatus status,
                               int error_code) OVERRIDE;
   virtual void Destroy() OVERRIDE;
   virtual void WillDestroyRenderWidget(RenderWidgetHost* rwh) {}
   virtual void SetTooltipText(const string16& tooltip_text) OVERRIDE;
   virtual void SelectionChanged(const string16& text,
                                 size_t offset,
                                 const ui::Range& range) OVERRIDE;
   virtual void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) OVERRIDE;
@@ skipping 222 matching lines @@
 
   // The event for the last mouse down we handled. We need this for context
   // menus and drags.
   GdkEventButton* last_mouse_down_;
 
   // Instance of accessibility information for the root of the AtkObject
   // tree representation of the WebKit render tree.
   scoped_ptr<BrowserAccessibilityManager> browser_accessibility_manager_;
 
   ui::GtkSignalRegistrar signals_;
+
+  ui::LatencyInfo software_latency_info_;
 };
 
 }  // namespace content
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_