Clamp rgba(...) alpha value in the CSS fast-path parser

third_party/WebKit/Source/core/css/parser/CSSParserFastPathsTest.cpp

Index: third_party/WebKit/Source/core/css/parser/CSSParserFastPathsTest.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSParserFastPathsTest.cpp b/third_party/WebKit/Source/core/css/parser/CSSParserFastPathsTest.cpp
index a464c2d836963e2442208589a77dff27f825e96a..250a2619677fc1bc1e6a1bb8f7187a88662c9b8c 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSParserFastPathsTest.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSParserFastPathsTest.cpp
@@ -4,6 +4,7 @@
 
 #include "core/css/parser/CSSParserFastPaths.h"
 
+#include "core/css/CSSColorValue.h"
 #include "core/css/CSSIdentifierValue.h"
 #include "core/css/CSSValueList.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -98,4 +99,12 @@ TEST(CSSParserFastPathsTest, ParseInvalidTransform) {
   ASSERT_EQ(nullptr, value);
 }
 
+TEST(CSSParserFastPathsTest, ParseColorWithLargeAlpha) {
+  CSSValue* value = CSSParserFastPaths::parseColor("rgba(0,0,0,1893205797.13)",
+                                                   HTMLStandardMode);
+  EXPECT_NE(nullptr, value);
+  EXPECT_TRUE(value->isColorValue());
+  EXPECT_EQ(Color::black, toCSSColorValue(*value).value());
+}
+
 }  // namespace blink