Implement chrome://view-http-cache with network service.

content/common/network_service.mojom

+// Copyright 2017 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.
+
+module content.mojom;
+
+import "url_loader.mojom";
+
+// Browser interface to the network service.

[Tom Sepez, 2017/05/09 21:10:29]

nit: are we providing a service to the network service? maybe
Browser interface used by the network service.

[jam, 2017/05/10 23:05:25]

this is a good question, I struggled with what to name this. We generally avoid
a name that's related to who's calling, since that could change (and seems like
a layering violation). I thought about something like NetworkServiceControl but
it seemed redundant. FWIW, the service manager has a service manager interface
as well.

+interface NetworkService {
+  HandleViewCacheRequest(URLRequest request,
+                         URLLoaderClient client);
+};