Reland "Add enable_ipc_logging build argument"

content/child/child_thread_impl.cc

 // Copyright (c) 2012 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 "content/child/child_thread_impl.h"
 
 #include <signal.h>
 #include <string>
 #include <utility>
 
@@ skipping 396 matching lines @@
   channel_->Init(
       IPC::ChannelMojo::CreateClientFactory(
           std::move(handle), ChildProcess::current()->io_task_runner()),
       true /* create_pipe_now */);
 }
 
 void ChildThreadImpl::Init(const Options& options) {
   g_lazy_tls.Pointer()->Set(this);
   on_channel_error_called_ = false;
   message_loop_ = base::MessageLoop::current();
-#ifdef IPC_MESSAGE_LOG_ENABLED
+#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
   // We must make sure to instantiate the IPC Logger *before* we create the
   // channel, otherwise we can get a callback on the IO thread which creates
   // the logger, and the logger does not like being created on the IO thread.
   IPC::Logging::GetInstance();
 #endif
 
   channel_ =
       IPC::SyncChannel::Create(this, ChildProcess::current()->io_task_runner(),
                                ChildProcess::current()->GetShutDownEvent());
-#ifdef IPC_MESSAGE_LOG_ENABLED
+#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
   if (!IsInBrowserProcess())
     IPC::Logging::GetInstance()->SetIPCSender(this);
 #endif
 
   if (!IsInBrowserProcess()) {
     // Don't double-initialize IPC support in single-process mode.
     mojo_ipc_support_.reset(new mojo::edk::ScopedIPCSupport(
         GetIOTaskRunner(), mojo::edk::ScopedIPCSupport::ShutdownPolicy::FAST));
     InitializeMojoIPCChannel();
   }
@@ skipping 125 matching lines @@
       FROM_HERE, base::Bind(&ChildThreadImpl::EnsureConnected,
                             channel_connected_factory_->GetWeakPtr()),
       base::TimeDelta::FromSeconds(connection_timeout));
 
 #if defined(OS_ANDROID)
   g_quit_closure.Get().BindToMainThread();
 #endif
 }
 
 ChildThreadImpl::~ChildThreadImpl() {
-#ifdef IPC_MESSAGE_LOG_ENABLED
+#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
   IPC::Logging::GetInstance()->SetIPCSender(NULL);
 #endif
 
   channel_->RemoveFilter(histogram_message_filter_.get());
   channel_->RemoveFilter(sync_message_filter_.get());
 
   // The ChannelProxy object caches a pointer to the IPC thread, so need to
   // reset it as it's not guaranteed to outlive this object.
   // NOTE: this also has the side-effect of not closing the main IPC channel to
   // the browser process.  This is needed because this is the signal that the
@@ skipping 129 matching lines @@
 bool ChildThreadImpl::OnMessageReceived(const IPC::Message& msg) {
   // Resource responses are sent to the resource dispatcher.
   if (resource_dispatcher_->OnMessageReceived(msg))
     return true;
   if (file_system_dispatcher_->OnMessageReceived(msg))
     return true;
 
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ChildThreadImpl, msg)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_Shutdown, OnShutdown)
-#if defined(IPC_MESSAGE_LOG_ENABLED)
+#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_SetIPCLoggingEnabled,
                         OnSetIPCLoggingEnabled)
 #endif
     IPC_MESSAGE_HANDLER(ChildProcessMsg_SetProfilerStatus,
                         OnSetProfilerStatus)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_GetChildProfilerData,
                         OnGetChildProfilerData)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_ProfilingPhaseCompleted,
                         OnProfilingPhaseCompleted)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_SetProcessBackgrounded,
@@ skipping 50 matching lines @@
 
 void ChildThreadImpl::OnProcessPurgeAndSuspend() {
 }
 
 void ChildThreadImpl::OnProcessResume() {}
 
 void ChildThreadImpl::OnShutdown() {
   base::MessageLoop::current()->QuitWhenIdle();
 }
 
-#if defined(IPC_MESSAGE_LOG_ENABLED)
+#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
 void ChildThreadImpl::OnSetIPCLoggingEnabled(bool enable) {
   if (enable)
     IPC::Logging::GetInstance()->Enable();
   else
     IPC::Logging::GetInstance()->Disable();
 }
 #endif  //  IPC_MESSAGE_LOG_ENABLED
 
 void ChildThreadImpl::OnSetProfilerStatus(ThreadData::Status status) {
   ThreadData::InitializeAndSetTrackingStatus(status);
@@ skipping 70 matching lines @@
   connected_to_browser_ = true;
   child_info_ = local_info;
   browser_info_ = remote_info;
 }
 
 bool ChildThreadImpl::IsInBrowserProcess() const {
   return static_cast<bool>(browser_process_io_runner_);
 }
 
 }  // namespace content