Android Webview IPC-based sync compositing

ui/gfx/ipc/gfx_param_traits.cc

 // Copyright 2014 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 "ui/gfx/ipc/gfx_param_traits.h"
 
 #include <string>
 
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/geometry/point3_f.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
+#include "ui/gfx/geometry/scroll_offset.h"
 #include "ui/gfx/range/range.h"
 
 namespace {
 
 struct SkBitmap_Data {
   // The color type for the bitmap (bits per pixel, etc).
   SkColorType fColorType;
 
   // The alpha type for the bitmap (opaque, premul, unpremul).
   SkAlphaType fAlphaType;
@@ skipping 279 matching lines @@
     return false;
   r->set_start(start);
   r->set_end(end);
   return true;
 }
 
 void ParamTraits<gfx::Range>::Log(const gfx::Range& r, std::string* l) {
   l->append(base::StringPrintf("(%" PRIuS ", %" PRIuS ")", r.start(), r.end()));
 }
 
+void ParamTraits<gfx::ScrollOffset>::Write(Message* m, const param_type& p) {
+  m->WriteDouble(p.x());
+  m->WriteDouble(p.y());
+}
+
+bool ParamTraits<gfx::ScrollOffset>::Read(const Message* m,
+                                          base::PickleIterator* iter,
+                                          param_type* r) {
+  double x = 0.f;
+  double y = 0.f;
+  if (!iter->ReadDouble(&x))
+    return false;
+  if (!iter->ReadDouble(&y))
+    return false;
+  r->set_x(x);
+  r->set_y(y);
+  return true;
+}
+
+void ParamTraits<gfx::ScrollOffset>::Log(const param_type& p, std::string* l) {
+  l->append("(");
+  LogParam(p.x(), l);
+  l->append(", ");
+  LogParam(p.y(), l);
+  l->append(")");
+}
+
 }  // namespace IPC
 
 // Generate param traits write methods.
 #include "ipc/param_traits_write_macros.h"
 namespace IPC {
 #undef UI_GFX_IPC_GFX_PARAM_TRAITS_MACROS_H_
 #include "ui/gfx/ipc/gfx_param_traits_macros.h"
 }  // namespace IPC
 
 // Generate param traits read methods.
 #include "ipc/param_traits_read_macros.h"
 namespace IPC {
 #undef UI_GFX_IPC_GFX_PARAM_TRAITS_MACROS_H_
 #include "ui/gfx/ipc/gfx_param_traits_macros.h"
 }  // namespace IPC
 
 // Generate param traits log methods.
 #include "ipc/param_traits_log_macros.h"
 namespace IPC {
 #undef UI_GFX_IPC_GFX_PARAM_TRAITS_MACROS_H_
 #include "ui/gfx/ipc/gfx_param_traits_macros.h"
 }  // namespace IPC