Add toDouble() helper, and use toFloat()/toDouble() for conversions

Source/bindings/tests/results/core/V8TestInterfaceConstructor.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.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "config.h"
 #include "V8TestInterfaceConstructor.h"
 
 #include "bindings/core/v8/Dictionary.h"
@@ skipping 46 matching lines @@
     V8StringResource<> stringArg;
     TestInterfaceEmpty* testInterfaceEmptyArg;
     Dictionary dictionaryArg;
     Vector<String> sequenceStringArg;
     Vector<Dictionary> sequenceDictionaryArg;
     Dictionary optionalDictionaryArg;
     TestInterfaceEmpty* optionalTestInterfaceEmptyArg;
     {
         v8::TryCatch block;
         V8RethrowTryCatchScope rethrow(block);
-        TONATIVE_VOID_INTERNAL(doubleArg, static_cast<double>(info[0]->NumberValue()));
+        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(doubleArg, toDouble(info[0], exceptionState), exceptionState);
         TOSTRING_VOID_INTERNAL(stringArg, info[1]);
         TONATIVE_VOID_INTERNAL(testInterfaceEmptyArg, V8TestInterfaceEmpty::toImplWithTypeCheck(info.GetIsolate(), info[2]));
         TONATIVE_VOID_INTERNAL(dictionaryArg, Dictionary(info[3], info.GetIsolate()));
         if (!dictionaryArg.isUndefinedOrNull() && !dictionaryArg.isObject()) {
             exceptionState.throwTypeError("parameter 4 ('dictionaryArg') is not an object.");
             exceptionState.throwIfNeeded();
             return;
         }
         TONATIVE_VOID_INTERNAL(sequenceStringArg, toImplArray<String>(info[4], 5, info.GetIsolate()));
         TONATIVE_VOID_INTERNAL(sequenceDictionaryArg, toImplArray<Dictionary>(info[5], 6, info.GetIsolate()));
@@ skipping 276 matching lines @@
     return 0;
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceConstructor* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace blink