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

Source/bindings/core/v8/PrivateScriptRunner.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "bindings/core/v8/PrivateScriptRunner.h"
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/V8Binding.h"
@@ skipping 222 matching lines @@
     v8::Handle<v8::Message> tryCatchMessage = block.Message();
     v8::Handle<v8::Value> message = exceptionObject->Get(v8String(isolate, "message"));
     String messageString;
     if (!message.IsEmpty() && message->IsString())
         messageString = toCoreString(v8::Handle<v8::String>::Cast(message));
 
     String exceptionName = toCoreString(v8::Handle<v8::String>::Cast(name));
     if (exceptionName == "PrivateScriptException") {
         v8::Handle<v8::Value> code = exceptionObject->Get(v8String(isolate, "code"));
         RELEASE_ASSERT(!code.IsEmpty() && code->IsInt32());
+        NonThrowableExceptionState nonThrowableExceptionState;
+        int exceptionCode = toInt32(isolate, code, NormalConversion, nonThrowableExceptionState);
         ScriptState::Scope scope(scriptStateInUserScript);
         ExceptionState exceptionState(errorContext, propertyName, interfaceName, scriptStateInUserScript->context()->Global(), scriptStateInUserScript->isolate());
-        exceptionState.throwDOMException(toInt32(isolate, code), messageString);
+        exceptionState.throwDOMException(exceptionCode, messageString);
         exceptionState.throwIfNeeded();
         return;
     }
 
     // Standard JS errors thrown by a private script are treated as real errors
     // of the private script and crash the renderer, except for a stack overflow
     // error. A stack overflow error can happen in a valid private script
     // if user's script can create a recursion that involves the private script.
     if (exceptionName == "RangeError" && messageString.contains("Maximum call stack size exceeded")) {
         ScriptState::Scope scope(scriptStateInUserScript);
@@ skipping 74 matching lines @@
     v8::Handle<v8::Value> result = V8ScriptRunner::callFunction(v8::Handle<v8::Function>::Cast(method), scriptState->executionContext(), holder, argc, argv, scriptState->isolate());
     if (block.HasCaught()) {
         rethrowExceptionInPrivateScript(scriptState->isolate(), block, scriptStateInUserScript, ExceptionState::ExecutionContext, methodName, className);
         block.ReThrow();
         return v8::Handle<v8::Value>();
     }
     return result;
 }
 
 } // namespace blink