Migrate components/data_reduction_proxy to Mojo interfaces.

components/data_reduction_proxy/content/browser/data_reduction_proxy_host_impl.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 "components/data_reduction_proxy/content/browser/data_reduction_proxy_host_impl.h"
+
+#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_process_host.h"
+#include "net/base/host_port_pair.h"
+
+namespace data_reduction_proxy {
+
+DataReductionProxyHostImpl::DataReductionProxyHostImpl(
+    DataReductionProxyConfig* config,
+    content::RenderProcessHost* host)
+    : config_(config), binding_(this) {
+  // Unit tests may pass nullptr as |host|.
+  if (host)
+    host->AddObserver(this);
+}
+
+DataReductionProxyHostImpl::~DataReductionProxyHostImpl() {}
+
+void DataReductionProxyHostImpl::BindRequest(
+    mojom::DataReductionProxyHostRequest request) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
+  binding_.Bind(std::move(request));
+}
+
+void DataReductionProxyHostImpl::IsDataReductionProxy(
+    const net::HostPortPair& proxy_server,
+    const IsDataReductionProxyCallback& callback) {
+  if (!config_) {
+    callback.Run(false);
+    return;
+  }
+
+  callback.Run(config_->IsDataReductionProxy(proxy_server, nullptr));
+}
+
+void DataReductionProxyHostImpl::RenderProcessHostDestroyed(
+    content::RenderProcessHost* host) {
+  content::BrowserThread::DeleteSoon(content::BrowserThread::IO, FROM_HERE,
+                                     this);
+}
+
+}  // namespace data_reduction_proxy