Decouple arity errors creation from throwing.

Source/bindings/core/v8/V8Binding.cpp

Index: Source/bindings/core/v8/V8Binding.cpp
diff --git a/Source/bindings/core/v8/V8Binding.cpp b/Source/bindings/core/v8/V8Binding.cpp
index d88c13f1b036e7e0ce61c064dd3b4e3d61f806f0..62c8a2b8841beaa5c1dd34a602b52dd2d4393033 100644
--- a/Source/bindings/core/v8/V8Binding.cpp
+++ b/Source/bindings/core/v8/V8Binding.cpp
@@ -73,36 +73,24 @@
 
 namespace blink {
 
-void throwArityTypeErrorForMethod(const char* method, const char* type, const char* valid, unsigned provided, v8::Isolate* isolate)
-{
-    V8ThrowException::throwTypeError(ExceptionMessages::failedToExecute(method, type, ExceptionMessages::invalidArity(valid, provided)), isolate);
-}
-
-void throwArityTypeErrorForConstructor(const char* type, const char* valid, unsigned provided, v8::Isolate* isolate)
-{
-    V8ThrowException::throwTypeError(ExceptionMessages::failedToConstruct(type, ExceptionMessages::invalidArity(valid, provided)), isolate);
-}
-
-void throwArityTypeError(ExceptionState& exceptionState, const char* valid, unsigned provided)
+void setArityTypeError(ExceptionState& exceptionState, const char* valid, unsigned provided)
 {
     exceptionState.throwTypeError(ExceptionMessages::invalidArity(valid, provided));
-    exceptionState.throwIfNeeded();
 }
 
-void throwMinimumArityTypeErrorForMethod(const char* method, const char* type, unsigned expected, unsigned providedLeastNumMandatoryParams, v8::Isolate* isolate)
+v8::Local<v8::Value> createMinimumArityTypeErrorForMethod(const char* method, const char* type, unsigned expected, unsigned providedLeastNumMandatoryParams, v8::Isolate* isolate)
 {
-    V8ThrowException::throwTypeError(ExceptionMessages::failedToExecute(method, type, ExceptionMessages::notEnoughArguments(expected, providedLeastNumMandatoryParams)), isolate);
+    return V8ThrowException::createTypeError(ExceptionMessages::failedToExecute(method, type, ExceptionMessages::notEnoughArguments(expected, providedLeastNumMandatoryParams)), isolate);
 }
 
-void throwMinimumArityTypeErrorForConstructor(const char* type, unsigned expected, unsigned providedLeastNumMandatoryParams, v8::Isolate* isolate)
+v8::Local<v8::Value> createMinimumArityTypeErrorForConstructor(const char* type, unsigned expected, unsigned providedLeastNumMandatoryParams, v8::Isolate* isolate)
 {
-    V8ThrowException::throwTypeError(ExceptionMessages::failedToConstruct(type, ExceptionMessages::notEnoughArguments(expected, providedLeastNumMandatoryParams)), isolate);
+    return V8ThrowException::createTypeError(ExceptionMessages::failedToConstruct(type, ExceptionMessages::notEnoughArguments(expected, providedLeastNumMandatoryParams)), isolate);
 }
 
-void throwMinimumArityTypeError(ExceptionState& exceptionState, unsigned expected, unsigned providedLeastNumMandatoryParams)
+void setMinimumArityTypeError(ExceptionState& exceptionState, unsigned expected, unsigned providedLeastNumMandatoryParams)
 {
     exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(expected, providedLeastNumMandatoryParams));
-    exceptionState.throwIfNeeded();
 }
 
 class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {