Move enabling IPC logging for all child processes to the Content API.

content/browser/content_ipc_logging.cc

+// Copyright (c) 2011 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/public/browser/content_ipc_logging.h"
+
+#include "base/bind.h"
+#include "content/browser/browser_child_process_host.h"
+#include "content/common/child_process_messages.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_process_host.h"
+#include "ipc/ipc_logging.h"
+
+namespace content {
+
+#if defined(IPC_MESSAGE_LOG_ENABLED)
+
+void EnableIPCLoggingForChildProcesses(bool enabled) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  BrowserChildProcessHost::Iterator i;  // default constr references a singleton
+  while (!i.Done()) {
+    i->Send(new ChildProcessMsg_SetIPCLoggingEnabled(enabled));
+    ++i;
+  }
+}
+
+void EnableIPCLogging(bool enable) {
+  // First enable myself.
+  if (enable)
+    IPC::Logging::GetInstance()->Enable();
+  else
+    IPC::Logging::GetInstance()->Disable();
+
+  // Now tell subprocesses.  Messages to ChildProcess-derived
+  // processes must be done on the IO thread.
+  BrowserThread::PostTask(
+      BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(EnableIPCLoggingForChildProcesses, enable));
+
+  // Finally, tell the renderers which don't derive from ChildProcess.
+  // Messages to the renderers must be done on the UI (main) thread.
+  for (RenderProcessHost::iterator i(RenderProcessHost::AllHostsIterator());
+       !i.IsAtEnd(); i.Advance())
+    i.GetCurrentValue()->Send(new ChildProcessMsg_SetIPCLoggingEnabled(enable));
+}
+
+#endif  // IPC_MESSAGE_LOG_ENABLED
+
+}  // namespace content