Added support for multiple parameters to Extension API callbacks.

chrome/browser/extensions/api/idltest/idltest_api.cc

Index: chrome/browser/extensions/api/idltest/idltest_api.cc
diff --git a/chrome/browser/extensions/api/idltest/idltest_api.cc b/chrome/browser/extensions/api/idltest/idltest_api.cc
index 1feff0a8cd6af633729b3b9787f795eac2b661ad..744aa7969eba51c88e5b3bae1fc291488d3c1b2d 100644
--- a/chrome/browser/extensions/api/idltest/idltest_api.cc
+++ b/chrome/browser/extensions/api/idltest/idltest_api.cc
@@ -24,14 +24,14 @@ ListValue* CopyBinaryValueToIntegerList(const BinaryValue* input) {
 bool IdltestSendArrayBufferFunction::RunImpl() {
   BinaryValue* input = NULL;
   EXTENSION_FUNCTION_VALIDATE(args_ != NULL && args_->GetBinary(0, &input));
-  result_.reset(CopyBinaryValueToIntegerList(input));
+  SetResult(CopyBinaryValueToIntegerList(input));
   return true;
 }
 
 bool IdltestSendArrayBufferViewFunction::RunImpl() {
   BinaryValue* input = NULL;
   EXTENSION_FUNCTION_VALIDATE(args_ != NULL && args_->GetBinary(0, &input));
-  result_.reset(CopyBinaryValueToIntegerList(input));
+  SetResult(CopyBinaryValueToIntegerList(input));
   return true;
 }
 
@@ -39,6 +39,6 @@ bool IdltestGetArrayBufferFunction::RunImpl() {
   std::string hello = "hello world";
   BinaryValue* output =
       BinaryValue::CreateWithCopiedBuffer(hello.c_str(), hello.size());
-  result_.reset(output);
+  SetResult(output);
   return true;
 }