[bindings] Pass NormalConversion to to[U]Int{8/16/32/64}(...) in v8_types.py and reduce conversion …

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 aece51bd40e5c1c34355ce8898613c59f1d94734..75cb2283302732faec75603a5d81bd2fe559cc9b 100644
--- a/Source/bindings/core/v8/custom/V8BlobCustomHelpers.cpp
+++ b/Source/bindings/core/v8/custom/V8BlobCustomHelpers.cpp
@@ -98,7 +98,9 @@ bool ParsedProperties::parseBlobPropertyBag(v8::Isolate* isolate, v8::Local<v8::
     v8::Local<v8::Value> lastModified;
     TONATIVE_DEFAULT(bool, containsLastModified, DictionaryHelper::get(dictionary, "lastModified", lastModified), false);
     if (containsLastModified) {
-        TONATIVE_DEFAULT(long long, lastModifiedInt, toInt64(isolate, lastModified), false);
+        long long lastModifiedInt = toInt64(isolate, lastModified, NormalConversion, exceptionState);
+        if (exceptionState.hadException())
+            return false;
         setLastModified(static_cast<double>(lastModifiedInt));
     } else {
         setDefaultLastModified();