Adding WebRTC logging filter, handler and handler host.

content/renderer/webrtc_logging_handler_impl.cc

+// Copyright (c) 2013 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/renderer/webrtc_logging_handler_impl.h"
+
+#include "base/logging.h"
+#include "base/message_loop_proxy.h"
+#include "content/renderer/webrtc_logging_message_filter.h"
+
+namespace content {
+
+// TODO(grunell): Probably skip the thread dchecks and make sure here instead

[tommi (sloooow) - chröme, 2013/03/28 11:00:10]

I like the thread dchecks :)

[Henrik Grunell, 2013/04/02 10:06:40]

Me too. But there's also dchecks in the filter. And I think there's were the
border should go. Calls to the filter must be done on the correct thread.

And here, we make sure the filter is called on the right thread. Sounds good?

+// that the filter is called on the right thread.
+
+WebRtcLoggingHandlerImpl::WebRtcLoggingHandlerImpl(
+    const scoped_refptr<WebRtcLoggingMessageFilter>& message_filter,
+    const scoped_refptr<base::MessageLoopProxy>& io_message_loop)
+    : message_filter_(message_filter),
+      io_message_loop_(io_message_loop) {
+}
+
+WebRtcLoggingHandlerImpl::~WebRtcLoggingHandlerImpl() {
+}
+
+void WebRtcLoggingHandlerImpl::OnFilterRemoved() {
+  message_filter_ = NULL;
+}
+
+void WebRtcLoggingHandlerImpl::OpenLog() {
+  DCHECK(io_message_loop_->BelongsToCurrentThread());
+  // TODO(grunell): Check if already opened. (Could have been opened by another
+  // render view.)
+  if (message_filter_)
+    message_filter_->OpenLog();
+}
+
+void WebRtcLoggingHandlerImpl::OnLogOpened(
+    base::SharedMemoryHandle handle,
+    uint32 length) {
+  DCHECK(io_message_loop_->BelongsToCurrentThread());
+  // TODO(grunell): Setup stuff.
+}
+
+void WebRtcLoggingHandlerImpl::OnOpenLogFailed() {
+  DCHECK(io_message_loop_->BelongsToCurrentThread());
+  LOG(ERROR) << "Could not open log.";
+  // TODO(grunell): Handle error.
+}
+
+}  // namespace content