Android Webview IPC-based sync compositing

ui/gfx/ipc/gfx_param_traits.h

Index: ui/gfx/ipc/gfx_param_traits.h
diff --git a/ui/gfx/ipc/gfx_param_traits.h b/ui/gfx/ipc/gfx_param_traits.h
index 77aa120600fbb2a286ccab65b721fe1c2aedf9ab..337505a20ee7bf04dd251058831aed94eea8c54f 100644
--- a/ui/gfx/ipc/gfx_param_traits.h
+++ b/ui/gfx/ipc/gfx_param_traits.h
@@ -22,6 +22,7 @@ class Point3F;
 class Range;
 class Rect;
 class RectF;
+class ScrollOffset;
 class Size;
 class SizeF;
 class Vector2d;
@@ -122,6 +123,14 @@ struct GFX_IPC_EXPORT ParamTraits<gfx::Range> {
   static void Log(const param_type& p, std::string* l);
 };
 
+template <>
+struct GFX_IPC_EXPORT ParamTraits<gfx::ScrollOffset> {
+  typedef gfx::ScrollOffset param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, base::PickleIterator* iter, param_type* r);
+  static void Log(const param_type& p, std::string* l);
+};
+
 }  // namespace IPC
 
 #endif  // UI_GFX_IPC_GFX_PARAM_TRAITS_H_