[PPAPI][MediaStream] Support configure for video input.

ppapi/proxy/ppapi_param_traits.cc

Index: ppapi/proxy/ppapi_param_traits.cc
diff --git a/ppapi/proxy/ppapi_param_traits.cc b/ppapi/proxy/ppapi_param_traits.cc
index 1e91f5cdf46bc5bfe5ecfda6e0421c1b003ed572..9b5e1078c4addaa8b7cc69e2a231194d45bab773 100644
--- a/ppapi/proxy/ppapi_param_traits.cc
+++ b/ppapi/proxy/ppapi_param_traits.cc
@@ -633,4 +633,42 @@ void ParamTraits<ppapi::SocketOptionData>::Log(const param_type& p,
                                                std::string* l) {
 }
 
+// ppapi::MediaStreamVideoTrack::Attributes ------------------------------------
+
+// static
+void ParamTraits<ppapi::MediaStreamVideoTrackShared::Attributes>::Write(
+    Message* m,
+    const param_type& p) {
+  ParamTraits<uint32_t>::Write(m, p.mask);
+  ParamTraits<int32_t>::Write(m, p.buffers);
+  ParamTraits<int32_t>::Write(m, p.width);
+  ParamTraits<int32_t>::Write(m, p.height);
+  ParamTraits<int32_t>::Write(m, static_cast<int32_t>(p.format));
+}
+
+// static
+bool ParamTraits<ppapi::MediaStreamVideoTrackShared::Attributes>::Read(
+    const Message* m,
+    PickleIterator* iter,
+    param_type* r) {
+  if (!ParamTraits<uint32_t>::Read(m, iter, &(r->mask)))
+    return false;
+  if (!ParamTraits<int32_t>::Read(m, iter, &(r->buffers)))
+    return false;
+  if (!ParamTraits<int32_t>::Read(m, iter, &(r->width)))
+    return false;
+  if (!ParamTraits<int32_t>::Read(m, iter, &(r->height)))
+    return false;
+  int32_t value = 0;
+  if (!ParamTraits<int32_t>::Read(m, iter, &value))
+    return false;
+  r->format = static_cast<PP_VideoFrame_Format>(value);
+  return true;
+}
+
+// static
+void ParamTraits<ppapi::MediaStreamVideoTrackShared::Attributes>::Log(
+    const param_type& p,
+    std::string* l) {
+}
 }  // namespace IPC