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 "components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h"
+#include "content/public/browser/browser_thread.h"
+#include "net/base/host_port_pair.h"
+
+namespace data_reduction_proxy {
+
+// static
+void DataReductionProxyHostImpl::Create(
+    DataReductionProxySettings* settings,
+    mojom::DataReductionProxyHostRequest request) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
+  new data_reduction_proxy::DataReductionProxyHostImpl(settings,
+                                                       std::move(request));
+}
+
+DataReductionProxyHostImpl::DataReductionProxyHostImpl(
+    DataReductionProxySettings* settings,
+    mojom::DataReductionProxyHostRequest request)
+    : config_(nullptr), binding_(this, std::move(request)) {
+  if (settings)
+    config_ = settings->Config();

[Sam McNally, 2016/06/20 04:57:26]

DataReductionProxySettings can only be used on the UI thread.

[leonhsl(Using Gerrit), 2016/06/20 10:51:51]

Oh yes, we can pass settings->Config() instead of settings into the constructor.

[leonhsl(Using Gerrit), 2016/06/23 07:16:37]

Done.

+}
+
+DataReductionProxyHostImpl::~DataReductionProxyHostImpl() {}
+
+void DataReductionProxyHostImpl::IsDataReductionProxy(
+    const net::HostPortPair& proxy_server,
+    const IsDataReductionProxyCallback& callback) {
+  if (!config_) {
+    callback.Run(false);
+    return;
+  }
+
+  callback.Run(config_->IsDataReductionProxy(proxy_server, nullptr));
+}
+
+}  // namespace data_reduction_proxy