json_schema_compiler: Use std::vector<char> for binary values.

chrome/browser/extensions/api/copresence/copresence_api_unittest.cc

 // 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.
 
 #include "base/json/json_writer.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/api/copresence/copresence_api.h"
 #include "chrome/browser/extensions/extension_api_unittest.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
 #include "components/copresence/proto/data.pb.h"
@@ skipping 25 matching lines @@
 using api::copresence::UnpublishOperation;
 using api::copresence::UnsubscribeOperation;
 
 
 PublishOperation* CreatePublish(const std::string& id) {
   PublishOperation* publish = new PublishOperation;
 
   publish->id = id;
   publish->time_to_live_millis.reset(new int(1000));
   publish->message.type = "joke";
-  publish->message.payload = "Knock Knock!";
+  std::string payload("Knock Knock!");
+  publish->message.payload.assign(payload.begin(), payload.end());
 
   return publish;
 }
 
 SubscribeOperation* CreateSubscribe(const std::string& id) {
   SubscribeOperation* subscribe = new SubscribeOperation;
 
   subscribe->id = id;
   subscribe->time_to_live_millis.reset(new int(1000));
   subscribe->filter.type = "joke";
@@ skipping 230 matching lines @@
   scoped_ptr<Operation> multi_operation(new Operation);
   multi_operation->publish.reset(CreatePublish("pub"));
   multi_operation->subscribe.reset(CreateSubscribe("sub"));
 
   EXPECT_FALSE(ExecuteOperation(multi_operation.Pass()));
 }
 
 }  // namespace extensions
 
 // TODO(ckehoe): add tests for auth tokens and api key functionality