[blimp] Add support for having multiple tabs

blimp/client/core/contents/tab_control_feature.cc

 // Copyright 2015 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 "blimp/client/core/contents/tab_control_feature.h"
 
 #include "blimp/common/create_blimp_message.h"
 #include "blimp/common/proto/blimp_message.pb.h"
 #include "blimp/common/proto/tab_control.pb.h"
 #include "blimp/net/blimp_message_processor.h"
@@ skipping 25 matching lines @@
   // TODO(dtrainor): Don't keep sending size events to the server.  Wait for a
   // CompletionCallback to return before sending future size updates.
   outgoing_message_processor_->ProcessMessage(std::move(message),
                                               net::CompletionCallback());
 }
 
 void TabControlFeature::CreateTab(int tab_id) {
   TabControlMessage* tab_control;
   std::unique_ptr<BlimpMessage> message = CreateBlimpMessage(&tab_control);
   tab_control->mutable_create_tab();
+  message->set_target_tab_id(tab_id);
   outgoing_message_processor_->ProcessMessage(std::move(message),
                                               net::CompletionCallback());
 }
 
 void TabControlFeature::CloseTab(int tab_id) {
   TabControlMessage* tab_control;
   std::unique_ptr<BlimpMessage> message = CreateBlimpMessage(&tab_control);
   tab_control->mutable_close_tab();
+  message->set_target_tab_id(tab_id);
   outgoing_message_processor_->ProcessMessage(std::move(message),
                                               net::CompletionCallback());
 }
 
 void TabControlFeature::ProcessMessage(
     std::unique_ptr<BlimpMessage> message,
     const net::CompletionCallback& callback) {
   DCHECK(!callback.is_null());
   callback.Run(net::OK);
 
   NOTIMPLEMENTED();
 }
 
 }  // namespace client
 }  // namespace blimp