Add use counters for recently launched canvas features

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp

 /*
  * Copyright (C) 2009 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 4887 matching lines @@
     ExceptionState& exceptionState) {
   const char* funcName = getTexImageFunctionName(functionID);
   if (isContextLost())
     return;
   if (!validateHTMLImageElement(funcName, image, exceptionState))
     return;
   if (!validateTexImageBinding(funcName, functionID, target))
     return;
 
   RefPtr<Image> imageForRender = image->cachedImage()->getImage();
-  if (imageForRender && imageForRender->isSVGImage())
+  if (imageForRender && imageForRender->isSVGImage()) {
+    if (canvas()) {
+      UseCounter::count(canvas()->document(), UseCounter::SVGInWebGL);
+    }
     imageForRender = drawImageIntoBuffer(
         imageForRender.release(), image->width(), image->height(), funcName);
+  }
 
   TexImageFunctionType functionType;
   if (functionID == TexImage2D || functionID == TexImage3D)
     functionType = TexImage;
   else
     functionType = TexSubImage;
   if (!imageForRender ||
       !validateTexFunc(funcName, functionType, SourceHTMLImageElement, target,
                        level, internalformat, imageForRender->width(),
                        imageForRender->height(), depth, 0, format, type,
@@ skipping 2908 matching lines @@
 
 void WebGLRenderingContextBase::getHTMLOrOffscreenCanvas(
     HTMLCanvasElementOrOffscreenCanvas& result) const {
   if (canvas())
     result.setHTMLCanvasElement(canvas());
   else
     result.setOffscreenCanvas(offscreenCanvas());
 }
 
 }  // namespace blink