Remove chrome.principals API

chrome/browser/signin/principals_message_filter.h

Index: chrome/browser/signin/principals_message_filter.h
diff --git a/chrome/browser/signin/principals_message_filter.h b/chrome/browser/signin/principals_message_filter.h
deleted file mode 100644
index 5d37864686d0f56bc2f13927bffeb37317555b04..0000000000000000000000000000000000000000
--- a/chrome/browser/signin/principals_message_filter.h
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2013 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_SIGNIN_PRINCIPALS_MESSAGE_FILTER_H_
-#define CHROME_BROWSER_SIGNIN_PRINCIPALS_MESSAGE_FILTER_H_
-
-#include "content/public/browser/browser_message_filter.h"
-
-class GURL;
-class Profile;
-
-// A message filter implementation that receives messages for browser account
-// management from the renderer.
-class PrincipalsMessageFilter : public content::BrowserMessageFilter {
- public:
-  explicit PrincipalsMessageFilter(int render_process_id);
-
-  // content::BrowserMessageFilter implementation.
-  void OverrideThreadForMessage(const IPC::Message& message,
-                                content::BrowserThread::ID* thread) override;
-  bool OnMessageReceived(const IPC::Message& message) override;
-
- private:
-  ~PrincipalsMessageFilter() override;
-
-  void OnMsgShowBrowserAccountManagementUI();
-  void OnMsgGetManagedAccounts(const GURL& url,
-                               std::vector<std::string>* managed_accounts);
-
-  int render_process_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(PrincipalsMessageFilter);
-};
-
-#endif  // CHROME_BROWSER_SIGNIN_PRINCIPALS_MESSAGE_FILTER_H_