refactor: rename the atom directory to shell

shell/browser/net/resolve_proxy_helper.h

@@ -0,0 +1,75 @@
+// Copyright (c) 2018 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_NET_RESOLVE_PROXY_HELPER_H_
+#define ATOM_BROWSER_NET_RESOLVE_PROXY_HELPER_H_
+
+#include <deque>
+#include <string>
+
+#include "base/memory/ref_counted.h"
+#include "base/optional.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "services/network/public/mojom/proxy_lookup_client.mojom.h"
+#include "url/gurl.h"
+
+namespace atom {
+
+class AtomBrowserContext;
+
+class ResolveProxyHelper
+    : public base::RefCountedThreadSafe<ResolveProxyHelper>,
+      network::mojom::ProxyLookupClient {
+ public:
+  using ResolveProxyCallback = base::OnceCallback<void(std::string)>;
+
+  explicit ResolveProxyHelper(AtomBrowserContext* browser_context);
+
+  void ResolveProxy(const GURL& url, ResolveProxyCallback callback);
+
+ protected:
+  ~ResolveProxyHelper() override;
+
+ private:
+  friend class base::RefCountedThreadSafe<ResolveProxyHelper>;
+  // A PendingRequest is a resolve request that is in progress, or queued.
+  struct PendingRequest {
+   public:
+    PendingRequest(const GURL& url, ResolveProxyCallback callback);
+    PendingRequest(PendingRequest&& pending_request) noexcept;
+    ~PendingRequest();
+
+    PendingRequest& operator=(PendingRequest&& pending_request) noexcept;
+
+    GURL url;
+    ResolveProxyCallback callback;
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(PendingRequest);
+  };
+
+  // Starts the first pending request.
+  void StartPendingRequest();
+
+  // network::mojom::ProxyLookupClient implementation.
+  void OnProxyLookupComplete(
+      int32_t net_error,
+      const base::Optional<net::ProxyInfo>& proxy_info) override;
+
+  // Self-reference. Owned as long as there's an outstanding proxy lookup.
+  scoped_refptr<ResolveProxyHelper> owned_self_;
+
+  std::deque<PendingRequest> pending_requests_;
+  // Binding for the currently in-progress request, if any.
+  mojo::Binding<network::mojom::ProxyLookupClient> binding_;
+
+  // Weak Ref
+  AtomBrowserContext* browser_context_;
+
+  DISALLOW_COPY_AND_ASSIGN(ResolveProxyHelper);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_NET_RESOLVE_PROXY_HELPER_H_