Add PermissionPromptAndroid skeleton

chrome/browser/permissions/permission_prompt_android.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_PERMISSIONS_PERMISSION_PROMPT_ANDROID_H_
+#define CHROME_BROWSER_PERMISSIONS_PERMISSION_PROMPT_ANDROID_H_
+
+#include "chrome/browser/ui/website_settings/permission_prompt.h"
+
+class GroupedPermissionInfoBarDelegate;
+class InfoBarService;
+
+namespace content {
+class WebContents;
+}
+
+namespace infobars {
+class InfoBar;
+}
+
+class PermissionPromptAndroid : public PermissionPrompt {
+ public:
+  explicit PermissionPromptAndroid(content::WebContents* web_contents);
+  ~PermissionPromptAndroid() override;
+
+  // PermissionPrompt:
+  void SetDelegate(Delegate* delegate) override;
+  void Show(const std::vector<PermissionRequest*>& requests,
+            const std::vector<bool>& accept_state) override;
+  bool CanAcceptRequestUpdate() override;
+  void Hide() override;
+  bool IsVisible() override;
+  void UpdateAnchorPosition() override;
+  gfx::NativeWindow GetNativeWindow() override;
+
+  void Closing();
+
+ private:
+  // PermissionPromptAndroid is owned by PermissionRequestManager, so it should
+  // be safe to hold a raw WebContents pointer here because this class is
+  // destroyed before the WebContents.
+  content::WebContents* web_contents_;
+  Delegate* delegate_;
+  infobars::InfoBar* infobar_;

[dominickn, 2016/10/26 02:51:16]

Nit: add another comment here to say

// |infobar_| is owned by the InfoBarService; we keep a pointer here so we can
ask the service to remove the infobar after it is added.

// |delegate_| is the PermissionRequestManager, which owns this object.

[lshang, 2016/10/26 04:55:17]

Done.

+
+  DISALLOW_COPY_AND_ASSIGN(PermissionPromptAndroid);
+};
+
+#endif  // CHROME_BROWSER_PERMISSIONS_PERMISSION_PROMPT_ANDROID_H_