Use UMA to track characteristics of dst color spaces

third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp

Index: third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
diff --git a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
index b3bd7d93278ee227f858d7c18dbbf28eacff334c..931fbac932ed92becbe124e487dc69537a95fb79 100644
--- a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
+++ b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
@@ -21,6 +21,7 @@
 #include "platform/image-decoders/ImageDecoder.h"
 
 #include "platform/PlatformInstrumentation.h"
+#include "platform/graphics/BitmapImageMetrics.h"
 #include "platform/image-decoders/bmp/BMPImageDecoder.h"
 #include "platform/image-decoders/gif/GIFImageDecoder.h"
 #include "platform/image-decoders/ico/ICOImageDecoder.h"
@@ -315,6 +316,11 @@ void ImageDecoder::setTargetColorProfile(const WebVector<char>& profile)
     if (gTargetColorProfile)
         return;
 
+    {
+        sk_sp<SkColorSpace> colorSpace = SkColorSpace::NewICC(profile.data(), profile.size());

[f(malita), 2016/07/25 16:13:54]

I presume we use Skia because this info is not available via QCMS?

[msarett, 2016/07/25 16:50:51]

Yes that's correct!

+        BitmapImageMetrics::countGamma(colorSpace.get());
+    }
+
     // FIXME: Add optional ICCv4 support and support for multiple monitors.
     gTargetColorProfile = qcms_profile_from_memory(profile.data(), profile.size());
     if (!gTargetColorProfile)