Modify DateComponents::parseTime to reject values with >3 fractional decimal places

third_party/WebKit/Source/platform/DateComponents.cpp

Index: third_party/WebKit/Source/platform/DateComponents.cpp
diff --git a/third_party/WebKit/Source/platform/DateComponents.cpp b/third_party/WebKit/Source/platform/DateComponents.cpp
index 5ad6e0b7dc0985e36e8553bf5603b88fd3848d4f..7176b0ca11481c44bbd8d132dc87c243c917ab4e 100644
--- a/third_party/WebKit/Source/platform/DateComponents.cpp
+++ b/third_party/WebKit/Source/platform/DateComponents.cpp
@@ -447,8 +447,10 @@ bool DateComponents::parseTime(const String& src,
           } else if (digitsLength == 2) {
             ok = toInt(src, index, 2, millisecond);
             millisecond *= 10;
-          } else {  // digitsLength >= 3
+          } else if (digitsLength == 3) {
             ok = toInt(src, index, 3, millisecond);
+          } else {  // digitsLength >= 4
+            return false;
           }
           DCHECK(ok);
           index += digitsLength;