API functions returning Promises should not throw exceptions.

Source/bindings/tests/results/V8TestInterface.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"
 #if ENABLE(CONDITION)
 #include "V8TestInterface.h"
 
@@ skipping 794 matching lines @@
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, strArg, info[0]);
     if (info.Length() > 1 && !V8TestInterfaceEmpty::hasInstance(info[1], info.GetIsolate())) {
         exceptionState.throwTypeError("parameter 2 is not of type 'TestInterfaceEmpty'.");
         exceptionState.throwIfNeeded();
         return;
     }
     V8TRYCATCH_VOID(TestInterfaceEmpty*, testInterfaceEmptyArg, V8TestInterfaceEmpty::toNativeWithTypeCheck(info.GetIsolate(), info[1]));
     ExecutionContext* scriptContext = currentExecutionContext(info.GetIsolate());
     RefPtr<TestInterfaceEmpty> result = impl->implementsComplexMethod(scriptContext, strArg, testInterfaceEmptyArg, exceptionState);
-    if (exceptionState.throwIfNeeded())
+    if (exceptionState.hadException()) {
+        exceptionState.throwIfNeeded();
         return;
+    }
     v8SetReturnValue(info, result.release());
 }
 
 static void implementsComplexMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::implementsComplexMethodMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
@@ skipping 115 matching lines @@
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialCallWithExecutionContextRaisesExceptionVoidMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "partialCallWithExecutionContextRaisesExceptionVoidMethod", "TestInterface", info.Holder(), info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
     ASSERT(impl);
     ExecutionContext* scriptContext = currentExecutionContext(info.GetIsolate());
     TestPartialInterface::partialCallWithExecutionContextRaisesExceptionVoidMethod(scriptContext, *impl, exceptionState);
-    if (exceptionState.throwIfNeeded())
+    if (exceptionState.hadException()) {
+        exceptionState.throwIfNeeded();
         return;
+    }
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialCallWithExecutionContextRaisesExceptionVoidMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::partialCallWithExecutionContextRaisesExceptionVoidMethodMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
@@ skipping 407 matching lines @@
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceImplementation* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore
 #endif // ENABLE(CONDITION)