Tag some of Mojo heap allocations for the heap profiler.

mojo/public/cpp/bindings/lib/multiplex_router.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 "mojo/public/cpp/bindings/lib/multiplex_router.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 332 matching lines @@
       DCHECK(endpoint->peer_closed());
       UpdateEndpointStateMayRemove(endpoint, ENDPOINT_CLOSED);
     } else {
       UpdateEndpointStateMayRemove(endpoint, PEER_ENDPOINT_CLOSED);
     }
   }
 
   DCHECK(endpoints_.empty());
 }
 
-void MultiplexRouter::SetMasterInterfaceName(const std::string& name) {
+void MultiplexRouter::SetMasterInterfaceName(const char* name) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  header_validator_->SetDescription(name + " [master] MessageHeaderValidator");
+  header_validator_->SetDescription(
+      std::string(name) + " [master] MessageHeaderValidator");
   control_message_handler_.SetDescription(
-      name + " [master] PipeControlMessageHandler");
+      std::string(name) + " [master] PipeControlMessageHandler");
+  connector_.SetWatcherHeapProfilerTag(name);
 }
 
 void MultiplexRouter::CreateEndpointHandlePair(
     ScopedInterfaceEndpointHandle* local_endpoint,
     ScopedInterfaceEndpointHandle* remote_endpoint) {
   MayAutoLock locker(lock_.get());
   uint32_t id = 0;
   do {
     if (next_interface_id_value_ >= kInterfaceIdNamespaceMask)
       next_interface_id_value_ = 1;
@@ skipping 544 matching lines @@
 
 void MultiplexRouter::AssertLockAcquired() {
 #if DCHECK_IS_ON()
   if (lock_)
     lock_->AssertAcquired();
 #endif
 }
 
 }  // namespace internal
 }  // namespace mojo