Generate param traits size methods for IPC files in content/ (and traits it depends on).

ui/gfx/ipc/skia/gfx_skia_param_traits.cc

Index: ui/gfx/ipc/skia/gfx_skia_param_traits.cc
diff --git a/ui/gfx/ipc/skia/gfx_skia_param_traits.cc b/ui/gfx/ipc/skia/gfx_skia_param_traits.cc
index 033590c406050b76d9c41eec0a4b840e0d94324c..5b09529f5dba1f235580076a1400a15192c4f88a 100644
--- a/ui/gfx/ipc/skia/gfx_skia_param_traits.cc
+++ b/ui/gfx/ipc/skia/gfx_skia_param_traits.cc
@@ -52,6 +52,11 @@ struct SkBitmap_Data {
 
 namespace IPC {
 
+void ParamTraits<SkBitmap>::GetSize(base::PickleSizer* s, const param_type& p) {
+  s->AddData(sizeof(SkBitmap_Data));
+  s->AddData(static_cast<int>(p.getSize()));
+}
+
 void ParamTraits<SkBitmap>::Write(base::Pickle* m, const SkBitmap& p) {
   size_t fixed_size = sizeof(SkBitmap_Data);
   SkBitmap_Data bmp_data;
@@ -91,6 +96,11 @@ void ParamTraits<SkBitmap>::Log(const SkBitmap& p, std::string* l) {
   l->append("<SkBitmap>");
 }
 
+void ParamTraits<gfx::Transform>::GetSize(base::PickleSizer* s,
+                                          const param_type& p) {
+  s->AddBytes(sizeof(SkMScalar) * 16);
+}
+
 void ParamTraits<gfx::Transform>::Write(base::Pickle* m, const param_type& p) {
 #ifdef SK_MSCALAR_IS_FLOAT
   float column_major_data[16];