Revert of Upgrade Blink to milliseconds-based last modified filetimes, part 3.

Source/bindings/core/v8/custom/V8BlobCustomHelpers.cpp

Index: Source/bindings/core/v8/custom/V8BlobCustomHelpers.cpp
diff --git a/Source/bindings/core/v8/custom/V8BlobCustomHelpers.cpp b/Source/bindings/core/v8/custom/V8BlobCustomHelpers.cpp
index 84020792b6e67c2b42fe340b9e0ffa4d6930b7a2..64c75a80142b96f15878bf69c36fd29d821a387e 100644
--- a/Source/bindings/core/v8/custom/V8BlobCustomHelpers.cpp
+++ b/Source/bindings/core/v8/custom/V8BlobCustomHelpers.cpp
@@ -65,7 +65,7 @@
 
 void ParsedProperties::setDefaultLastModified()
 {
-    setLastModified(currentTimeMS());
+    setLastModified(currentTime());
 }
 
 bool ParsedProperties::parseBlobPropertyBag(v8::Isolate* isolate, v8::Local<v8::Value> propertyBag, const char* blobClassName, ExceptionState& exceptionState)
@@ -99,7 +99,7 @@
     TONATIVE_DEFAULT(bool, containsLastModified, DictionaryHelper::get(dictionary, "lastModified", lastModified), false);
     if (containsLastModified) {
         TONATIVE_DEFAULT(long long, lastModifiedInt, toInt64(lastModified), false);
-        setLastModified(static_cast<double>(lastModifiedInt));
+        setLastModified(static_cast<double>(lastModifiedInt) / msPerSecond);
     } else {
         setDefaultLastModified();
     }