ASSERTION FAILED: factor > 0

Source/core/css/parser/SizesAttributeParser.cpp

Index: Source/core/css/parser/SizesAttributeParser.cpp
diff --git a/Source/core/css/parser/SizesAttributeParser.cpp b/Source/core/css/parser/SizesAttributeParser.cpp
index b88940977dfca0f013934795342047594f1cb613..c0b495c290d886b026ccff8dee9e8081fcfde16e 100644
--- a/Source/core/css/parser/SizesAttributeParser.cpp
+++ b/Source/core/css/parser/SizesAttributeParser.cpp
@@ -12,11 +12,12 @@
 
 namespace blink {
 
-SizesAttributeParser::SizesAttributeParser(PassRefPtr<MediaValues> mediaValues, const String& attribute)
+SizesAttributeParser::SizesAttributeParser(PassRefPtr<MediaValues> mediaValues, const String& attribute, bool hasLocalFrame)
     : m_mediaValues(mediaValues)
     , m_length(0)
     , m_lengthWasSet(false)
     , m_viewportDependant(false)
+    , m_hasLocalFrame(hasLocalFrame)
 {
     CSSTokenizer::tokenize(attribute, m_tokens);
     m_isValid = parse(m_tokens);
@@ -39,9 +40,11 @@ bool SizesAttributeParser::calculateLengthInPixels(CSSParserTokenIterator startT
         if (!CSSPrimitiveValue::isLength(startToken->unitType()))
             return false;
         m_viewportDependant = CSSPrimitiveValue::isViewportPercentageLength(startToken->unitType());
-        if ((m_mediaValues->computeLength(startToken->numericValue(), startToken->unitType(), length)) && (length >= 0)) {
-            result = clampTo<float>(length);
-            return true;
+        if (!m_viewportDependant || m_hasLocalFrame) {
+            if ((m_mediaValues->computeLength(startToken->numericValue(), startToken->unitType(), length)) && (length >= 0)) {
+                result = clampTo<float>(length);
+                return true;
+            }
         }
     } else if (type == FunctionToken) {
         SizesCalcParser calcParser(startToken, endToken, m_mediaValues);