Remoting: Remove references to POSIX shared memory.

remoting/host/remoting_me2me_host.cc

Index: remoting/host/remoting_me2me_host.cc
diff --git a/remoting/host/remoting_me2me_host.cc b/remoting/host/remoting_me2me_host.cc
index 6628902f238862048fd1b3a06dc8ebcb133e85bf..9b6aa41bfa6563d4d1b808cfd0bccd9e5f88e671 100644
--- a/remoting/host/remoting_me2me_host.cc
+++ b/remoting/host/remoting_me2me_host.cc
@@ -25,6 +25,7 @@
 #include "base/strings/stringize_macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
+#include "ipc/attachment_broker_unprivileged.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_listener.h"
@@ -381,6 +382,8 @@ class HostProcess : public ConfigWatcher::Delegate,
 
   scoped_ptr<ChromotingHostContext> context_;
 
+  scoped_ptr<IPC::AttachmentBrokerUnprivileged> attachment_broker_;
+
   // Accessed on the UI thread.
   scoped_ptr<IPC::ChannelProxy> daemon_channel_;
 
@@ -471,6 +474,7 @@ HostProcess::HostProcess(scoped_ptr<ChromotingHostContext> context,
                          int* exit_code_out,
                          ShutdownWatchdog* shutdown_watchdog)
     : context_(std::move(context)),
+      attachment_broker_(IPC::AttachmentBrokerUnprivileged::CreateBroker()),
       state_(HOST_STARTING),
       use_service_account_(false),
       enable_vp9_(false),
@@ -537,6 +541,11 @@ bool HostProcess::InitWithCommandLine(const base::CommandLine* cmd_line) {
                                               IPC::Channel::MODE_CLIENT,
                                               this,
                                               context_->network_task_runner());
+  if (attachment_broker_) {
+    attachment_broker_->DesignateBrokerCommunicationChannel(
+        daemon_channel_.get());
+  }
+
 #else  // !defined(REMOTING_MULTI_PROCESS)
   // Connect to the daemon process.
   std::string channel_name =
@@ -545,6 +554,10 @@ bool HostProcess::InitWithCommandLine(const base::CommandLine* cmd_line) {
     daemon_channel_ =
         IPC::ChannelProxy::Create(channel_name, IPC::Channel::MODE_CLIENT, this,
                                   context_->network_task_runner().get());
+    if (attachment_broker_) {
+      attachment_broker_->DesignateBrokerCommunicationChannel(
+          daemon_channel_.get());
+    }
   }
 
   if (cmd_line->HasSwitch(kHostConfigSwitchName)) {