Use real colorspace for DirectComposition overlays.

ui/gfx/color_space.h

Index: ui/gfx/color_space.h
diff --git a/ui/gfx/color_space.h b/ui/gfx/color_space.h
index aaca2de3ab38dec94a97f2a0b3575b6eb75d99f2..075b9d651193a88b6f01fe77fcae85d1d4848e0b 100644
--- a/ui/gfx/color_space.h
+++ b/ui/gfx/color_space.h
@@ -10,6 +10,7 @@
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
+#include "base/pickle.h"
 #include "build/build_config.h"
 #include "third_party/skia/include/core/SkColorSpace.h"
 #include "ui/gfx/gfx_export.h"
@@ -166,6 +167,9 @@ class GFX_EXPORT ColorSpace {
   // range, and unspecified spaces.
   sk_sp<SkColorSpace> ToSkColorSpace() const;
 
+  bool Serialize(base::Pickle* pickle) const;
+  bool ReadFromPickle(base::PickleIterator* iter);
+
   // Populate |icc_profile| with an ICC profile that represents this color
   // space. Returns false if this space is not representable.
   bool GetICCProfile(ICCProfile* icc_profile) const;