Record UMA stats for Blink decoded image orientation

third_party/WebKit/Source/platform/graphics/BitmapImage.cpp

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 350 matching lines @@
         String fileExtention = m_source.filenameExtension();
         DecodedImageType type =
             fileExtention == "jpg"  ? ImageJPEG :
             fileExtention == "png"  ? ImagePNG :
             fileExtention == "gif"  ? ImageGIF :
             fileExtention == "webp" ? ImageWebP :
             fileExtention == "ico"  ? ImageICO :
             fileExtention == "bmp"  ? ImageBMP :
             ImageUnknown;
         Platform::current()->histogramEnumeration("Blink.DecodedImageType", type, LastDecodedImageType + 1);
+        Platform::current()->histogramEnumeration("Blink.DecodedImage.Orientation", m_source.orientationAtIndex(0).orientation(), ImageOrientationEnumEnd);
     }
 
     return m_sizeAvailable;
 }
 
 bool BitmapImage::ensureFrameIsCached(size_t index)
 {
     if (index >= frameCount())
         return false;
 
@@ skipping 282 matching lines @@
     destroyDecodedDataIfNecessary();
 
     // We need to draw this frame if we advanced to it while not skipping, or if
     // while trying to skip frames we hit the last frame and thus had to stop.
     if (skippingFrames != advancedAnimation)
         imageObserver()->animationAdvanced(this);
     return advancedAnimation;
 }
 
 } // namespace blink