Fixed DCHECK crash for radial gradients with very large values

third_party/WebKit/Source/core/css/CSSGradientValue.cpp

Index: third_party/WebKit/Source/core/css/CSSGradientValue.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSGradientValue.cpp b/third_party/WebKit/Source/core/css/CSSGradientValue.cpp
index 098778139fd5821e766fb34032e65386750974c8..097a78eda3ad77061c13937440a900afa64e1369 100644
--- a/third_party/WebKit/Source/core/css/CSSGradientValue.cpp
+++ b/third_party/WebKit/Source/core/css/CSSGradientValue.cpp
@@ -1159,8 +1159,16 @@ PassRefPtr<Gradient> CSSRadialGradientValue::createGradient(const CSSToLengthCon
         }
     }
 
+    if (std::isinf(firstRadius))
+        firstRadius = std::numeric_limits<float>::max();
     DCHECK(std::isfinite(firstRadius));
+
+    if (std::isinf(secondRadius.width()))
+        secondRadius.setWidth(std::numeric_limits<float>::max());
     DCHECK(std::isfinite(secondRadius.width()));
+
+    if (std::isinf(secondRadius.height()))
+        secondRadius.setHeight(std::numeric_limits<float>::max());

[Bugs Nash, 2016/08/18 05:53:21]

Would it be better to put an infinity adjustment in
CSSRadialGradientValue::resolveRadius?

[sashab, 2016/08/18 06:41:34]

Oh wow, because of you saying that I changed this to a 1-line fix :P And it uses
clampTo() instead of this numeric_limits stuff. Nice!!

     DCHECK(std::isfinite(secondRadius.height()));
 
     bool isDegenerate = !secondRadius.width() || !secondRadius.height();