Added support for multiple parameters to Extension API callbacks.

chrome/browser/extensions/extension_record_api.cc

Index: chrome/browser/extensions/extension_record_api.cc
diff --git a/chrome/browser/extensions/extension_record_api.cc b/chrome/browser/extensions/extension_record_api.cc
index 6c6580df68e383ad409d3ddc91a6150cba2dc671..15b1d1d4fe8578aa4e1ae3a2a3c462d61a1e12a3 100644
--- a/chrome/browser/extensions/extension_record_api.cc
+++ b/chrome/browser/extensions/extension_record_api.cc
@@ -51,7 +51,7 @@ bool RunPageCyclerFunction::RunImpl() {
   // parameter parsing) then return a list of such errors, else perform
   // RunTestBrowser on the BlockingPool.
   if (!errors_.empty()) {
-    result_.reset(record::CaptureURLs::Result::Create(errors_));
+    SetSingleResult(record::CaptureURLs::Result::Create(errors_));
     SendResponse(true);
   } else {
     content::BrowserThread::PostBlockingPoolTask(FROM_HERE,
@@ -178,7 +178,7 @@ void CaptureURLsFunction::AddSwitches(CommandLine* line) {
 }
 
 void CaptureURLsFunction::Finish() {
-  result_.reset(record::CaptureURLs::Result::Create(errors_));
+  SetSingleResult(record::CaptureURLs::Result::Create(errors_));
   SendResponse(true);
 }
 
@@ -245,7 +245,7 @@ void ReplayURLsFunction::Finish() {
   result.stats = stats_;
   result.errors = errors_;
 
-  result_.reset(record::ReplayURLs::Result::Create(result));
+  SetSingleResult(record::ReplayURLs::Result::Create(result));
   SendResponse(true);
 }