1 files changed, 97 insertions, 0 deletions
diff --git a/chromium/chrome/browser/signin/dice_tab_helper.h b/chromium/chrome/browser/signin/dice_tab_helper.h
new file mode 100644
index 00000000000..2f6190a4f98
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+++ b/chromium/chrome/browser/signin/dice_tab_helper.h
@@ -0,0 +1,97 @@
+// Copyright 2017 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_DICE_TAB_HELPER_H_
+#define CHROME_BROWSER_SIGNIN_DICE_TAB_HELPER_H_
+
+#include "components/signin/public/base/signin_metrics.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/browser/web_contents_user_data.h"
+
+namespace content {
+class NavigationHandle;
+}
+
+// Tab helper used for DICE to tag signin tabs. Signin tabs can be reused.
+class DiceTabHelper : public content::WebContentsUserData<DiceTabHelper>,
+                      public content::WebContentsObserver {
+ public:
+  DiceTabHelper(const DiceTabHelper&) = delete;
+  DiceTabHelper& operator=(const DiceTabHelper&) = delete;
+
+  ~DiceTabHelper() override;
+
+  signin_metrics::AccessPoint signin_access_point() const {
+    return signin_access_point_;
+  }
+
+  signin_metrics::PromoAction signin_promo_action() const {
+    return signin_promo_action_;
+  }
+
+  signin_metrics::Reason signin_reason() const { return signin_reason_; }
+
+  const GURL& redirect_url() const { return redirect_url_; }
+
+  const GURL& signin_url() const { return signin_url_; }
+
+  // Initializes the DiceTabHelper for a new signin flow. Must be called once
+  // per signin flow happening in the tab, when the signin URL is being loaded.
+  void InitializeSigninFlow(const GURL& signin_url,
+                            signin_metrics::AccessPoint access_point,
+                            signin_metrics::Reason reason,
+                            signin_metrics::PromoAction promo_action,
+                            const GURL& redirect_url);
+
+  // Returns true if this the tab is a re-usable chrome sign-in page (the signin
+  // page is loading or loaded in the tab).
+  // Returns false if the user or the page has navigated away from |signin_url|.
+  bool IsChromeSigninPage() const;
+
+  // Returns true if a signin flow was initialized with the reason
+  // kSigninPrimaryAccount and is not yet complete.
+  // Note that there is not guarantee that the flow would ever finish, and in
+  // some rare cases it is possible that a "non-sync" signin happens while this
+  // is true (if the user aborts the flow and then re-uses the same tab for a
+  // normal web signin).
+  bool IsSyncSigninInProgress() const;
+
+  // Called to notify that the sync signin is complete.
+  void OnSyncSigninFlowComplete();
+
+ private:
+  friend class content::WebContentsUserData<DiceTabHelper>;
+  explicit DiceTabHelper(content::WebContents* web_contents);
+
+  // kStarted: a Sync signin flow was started and not completed.
+  // kNotStarted: there is no sync signin flow in progress.
+  enum class SyncSigninFlowStatus { kNotStarted, kStarted };
+
+  // content::WebContentsObserver:
+  void DidStartNavigation(
+      content::NavigationHandle* navigation_handle) override;
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
+
+  // Returns true if this is a navigation to the signin URL.
+  bool IsSigninPageNavigation(
+      content::NavigationHandle* navigation_handle) const;
+
+  GURL redirect_url_;
+  GURL signin_url_;
+  signin_metrics::AccessPoint signin_access_point_ =
+      signin_metrics::AccessPoint::ACCESS_POINT_UNKNOWN;
+  signin_metrics::PromoAction signin_promo_action_ =
+      signin_metrics::PromoAction::PROMO_ACTION_NO_SIGNIN_PROMO;
+  signin_metrics::Reason signin_reason_ =
+      signin_metrics::Reason::kUnknownReason;
+  bool is_chrome_signin_page_ = false;
+  bool signin_page_load_recorded_ = false;
+  SyncSigninFlowStatus sync_signin_flow_status_ =
+      SyncSigninFlowStatus::kNotStarted;
+
+  WEB_CONTENTS_USER_DATA_KEY_DECL();
+};
+
+#endif  // CHROME_BROWSER_SIGNIN_DICE_TAB_HELPER_H_