Stub for ARC print Bridge

chrome/browser/chromeos/arc/arc_print_bridge.h

+// Copyright 2016 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_ARC_ARC_PRINT_BRIDGE_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_ARC_PRINT_BRIDGE_H_
+
+#include "base/macros.h"
+#include "components/arc/arc_bridge_service.h"
+#include "components/arc/arc_service.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace arc {
+
+class ArcPrintBridge : public ArcService,
+                       public ArcBridgeService::Observer,

[Luis Héctor Chávez, 2016/07/14 16:29:44]

You need to rebase, since this interface changed. It's now
InstanceHolder<mojom::PrintInstance>::Observer

[Sergey Poromov, 2016/07/19 16:32:09]

Done.

+                       public mojom::PrintHost,
+                       public base::RefCountedThreadSafe<ArcPrintBridge> {

[Luis Héctor Chávez, 2016/07/14 16:29:44]

base::RefCountedThreadSafe requires you to make your destructor private, making
it incompatible with unique_ptr[1]. Fortunately, you can just remove this if you
follow the rest of the suggestions I'm making.

1: https://cs.chromium.org/chromium/src/base/memory/ref_counted.h?l=127

[Sergey Poromov, 2016/07/19 16:32:09]

Done.

+ public:
+  explicit ArcPrintBridge(ArcBridgeService* bridge_service);
+  ~ArcPrintBridge() override;
+
+  // ArcBridgeService::Observer overrides.
+  void OnPrintInstanceReady() override;
+
+  void Print(mojo::ScopedHandle) override;
+
+ private:
+  void SavePdf(int);
+  void OpenPdf();
+
+  mojo::Binding<mojom::PrintHost> binding_;
+  base::FilePath file_path_;
+
+  DISALLOW_COPY_AND_ASSIGN(ArcPrintBridge);
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_PRINT_BRIDGE_H_