[Extensions Bindings] Include request id in a custom callback response

extensions/renderer/api_request_handler_unittest.cc

Index: extensions/renderer/api_request_handler_unittest.cc
diff --git a/extensions/renderer/api_request_handler_unittest.cc b/extensions/renderer/api_request_handler_unittest.cc
index d29ba5f78d42c8cd9e4066ad22a21473dc29dff5..cccf4d514f7b35304eaae2141246f908a20e5459 100644
--- a/extensions/renderer/api_request_handler_unittest.cc
+++ b/extensions/renderer/api_request_handler_unittest.cc
@@ -6,6 +6,7 @@
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/optional.h"
+#include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "extensions/renderer/api_binding_test.h"
 #include "extensions/renderer/api_binding_test_util.h"
@@ -220,7 +221,8 @@ TEST_F(APIRequestHandlerTest, CustomCallbackArguments) {
   ASSERT_TRUE(gin::Converter<ArgumentList>::FromV8(isolate(), result, &args));
   ASSERT_EQ(5u, args.size());
   EXPECT_EQ("\"method\"", V8ToString(args[0], context));
-  EXPECT_EQ("{}", V8ToString(args[1], context));
+  EXPECT_EQ(base::StringPrintf("{\"id\":%d}", request_id),
+            V8ToString(args[1], context));
   EXPECT_EQ(callback, args[2]);
   EXPECT_EQ("\"response\"", V8ToString(args[3], context));
   EXPECT_EQ("\"arguments\"", V8ToString(args[4], context));
@@ -261,7 +263,8 @@ TEST_F(APIRequestHandlerTest, CustomCallbackArgumentsWithEmptyCallback) {
   ASSERT_TRUE(gin::Converter<ArgumentList>::FromV8(isolate(), result, &args));
   ASSERT_EQ(3u, args.size());
   EXPECT_EQ("\"method\"", V8ToString(args[0], context));
-  EXPECT_EQ("{}", V8ToString(args[1], context));
+  EXPECT_EQ(base::StringPrintf("{\"id\":%d}", request_id),
+            V8ToString(args[1], context));
   EXPECT_TRUE(args[2]->IsUndefined());
 
   EXPECT_TRUE(request_handler.GetPendingRequestIdsForTesting().empty());