Make cc::SurfaceId unguessable

cc/ipc/cc_param_traits.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 "cc/ipc/cc_param_traits.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/numerics/safe_conversions.h"
 #include "base/time/time.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/filter_operations.h"
 #include "cc/quads/debug_border_draw_quad.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/quads/largest_draw_quad.h"
 #include "cc/quads/render_pass_draw_quad.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "cc/quads/surface_draw_quad.h"
 #include "cc/quads/tile_draw_quad.h"
 #include "cc/quads/yuv_video_draw_quad.h"
+#include "cc/surfaces/surface_id.h"
 #include "third_party/skia/include/core/SkData.h"
 #include "third_party/skia/include/core/SkFlattenableSerialization.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "ui/gfx/ipc/geometry/gfx_param_traits.h"
 #include "ui/gfx/ipc/skia/gfx_skia_param_traits.h"
 
 namespace IPC {
 
 void ParamTraits<cc::FilterOperation>::GetSize(base::PickleSizer* s,
@@ skipping 528 matching lines @@
       case cc::DrawQuad::YUV_VIDEO_CONTENT:
         LogParam(*cc::YUVVideoDrawQuad::MaterialCast(quad), l);
         break;
       case cc::DrawQuad::INVALID:
         break;
     }
   }
   l->append("])");
 }
 
+void ParamTraits<cc::SurfaceId>::GetSize(base::PickleSizer* s,
+                                         const param_type& p) {
+  GetParamSize(s, p.id_namespace());
+  GetParamSize(s, p.local_id());
+  GetParamSize(s, p.nonce());
+}
+
+void ParamTraits<cc::SurfaceId>::Write(base::Pickle* m, const param_type& p) {
+  WriteParam(m, p.id_namespace());
+  WriteParam(m, p.local_id());
+  WriteParam(m, p.nonce());
+}
+
+bool ParamTraits<cc::SurfaceId>::Read(const base::Pickle* m,
+                                      base::PickleIterator* iter,
+                                      param_type* p) {
+  uint32_t id_namespace;
+  if (!ReadParam(m, iter, &id_namespace))
+    return false;
+
+  uint32_t local_id;
+  if (!ReadParam(m, iter, &local_id))
+    return false;
+
+  uint64_t nonce;
+  if (!ReadParam(m, iter, &nonce))
+    return false;
+
+  *p = cc::SurfaceId(id_namespace, local_id, nonce);
+  return true;
+}
+
+void ParamTraits<cc::SurfaceId>::Log(const param_type& p, std::string* l) {
+  l->append("SurfaceId(");
+  LogParam(p.id_namespace(), l);
+  l->append(", ");
+  LogParam(p.local_id(), l);
+  l->append(", ");
+  LogParam(p.nonce(), l);
+  l->append(")");
+}
+
 namespace {
 enum CompositorFrameType {
   NO_FRAME,
   DELEGATED_FRAME,
   GL_FRAME,
 };
 }
 
 void ParamTraits<cc::CompositorFrame>::Write(base::Pickle* m,
                                              const param_type& p) {
@@ skipping 326 matching lines @@
 #undef CC_IPC_CC_PARAM_TRAITS_MACROS_H_
 #include "cc/ipc/cc_param_traits_macros.h"
 }  // namespace IPC
 
 // Generate param traits log methods.
 #include "ipc/param_traits_log_macros.h"
 namespace IPC {
 #undef CC_IPC_CC_PARAM_TRAITS_MACROS_H_
 #include "cc/ipc/cc_param_traits_macros.h"
 }  // namespace IPC