arc: Pass auth token from Chrome to ARC instance.

chrome/browser/chromeos/arc/arc_auth_ui.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_AUTH_UI_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_UI_H_
+
+#include "base/macros.h"
+#include "components/arc/auth/arc_auth_fetcher.h"
+#include "ui/web_dialogs/web_dialog_delegate.h"
+
+namespace content {
+class BrowserContext;
+}
+
+namespace views {
+class Widget;
+}
+
+namespace arc {
+
+// Shows ARC LSO web view that requires user input.
+class ArcAuthUI : public ui::WebDialogDelegate,
+                  public ArcAuthFetcher::Delegate {
+ public:
+  class Delegate {
+   public:
+    // Called when dialog is closed.
+    virtual void OnAuthUIClosed() = 0;
+
+   protected:
+    virtual ~Delegate() = default;
+  };
+
+  ArcAuthUI(content::BrowserContext* browser_context, Delegate* delegate);
+  ~ArcAuthUI() override;
+
+  void Close();
+
+  // ui::WebDialogDelegate:
+  ui::ModalType GetDialogModalType() const override;
+  base::string16 GetDialogTitle() const override;
+  GURL GetDialogContentURL() const override;
+  void GetWebUIMessageHandlers(
+      std::vector<content::WebUIMessageHandler*>* handlers) const override;
+  void GetDialogSize(gfx::Size* size) const override;
+  std::string GetDialogArgs() const override;
+  void OnDialogClosed(const std::string& json_retval) override;
+  void OnCloseContents(content::WebContents* source,
+                       bool* out_close_dialog) override;
+  bool ShouldShowDialogTitle() const override;
+  bool HandleContextMenu(const content::ContextMenuParams& params) override;
+  void OnLoadingStateChanged(content::WebContents* source) override;
+
+  // ArcAuthFetcher::Delegate:
+  void OnAuthCodeFetched(const std::string& code) override;
+  void OnAuthCodeNeedUI() override;
+  void OnAuthCodeFailed() override;
+
+ private:
+  // Unowned pointers.
+  content::BrowserContext* const browser_context_;
+  Delegate* const delegate_;
+  const GURL target_url_;
+
+  // Owned by view hierarchy.
+  views::Widget* widget_;
+
+  scoped_ptr<ArcAuthFetcher> auth_fetcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(ArcAuthUI);
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_UI_H_