[Password Manager] Setup experiment to restrict autofilling of sync credential

chrome/browser/password_manager/chrome_password_manager_client.h

 // Copyright 2014 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_PASSWORD_MANAGER_CHROME_PASSWORD_MANAGER_CLIENT_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_CHROME_PASSWORD_MANAGER_CLIENT_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "components/password_manager/content/browser/content_password_manager_driver.h"
@@ skipping 22 matching lines @@
 class ChromePasswordManagerClient
     : public password_manager::PasswordManagerClient,
       public content::WebContentsObserver,
       public content::WebContentsUserData<ChromePasswordManagerClient> {
  public:
   virtual ~ChromePasswordManagerClient();
 
   // PasswordManagerClient implementation.
   virtual bool IsAutomaticPasswordSavingEnabled() const OVERRIDE;
   virtual bool IsPasswordManagerEnabledForCurrentPage() const OVERRIDE;
+  virtual bool ShouldFilterAutofillResult(
+      const autofill::PasswordForm& form) const OVERRIDE;
   virtual bool IsSyncAccountCredential(
       const std::string& username, const std::string& origin) const OVERRIDE;
   virtual void PromptUserToSavePassword(
       scoped_ptr<password_manager::PasswordFormManager> form_to_save) OVERRIDE;
   virtual void AutomaticPasswordSave(
       scoped_ptr<password_manager::PasswordFormManager> saved_form_manager)
       OVERRIDE;
   virtual void PasswordWasAutofilled(
       const autofill::PasswordFormMap& best_matches) const OVERRIDE;
   virtual void PasswordAutofillWasBlocked(
@@ skipping 30 matching lines @@
   // Observer for PasswordGenerationPopup events. Used for testing.
   void SetTestObserver(autofill::PasswordGenerationPopupObserver* observer);
 
   // Returns true if the bubble UI is enabled, and false if we're still using
   // the sad old Infobar UI.
   static bool IsTheHotNewBubbleUIEnabled();
 
   // Returns true if the password manager should be enabled during sync signin.
   static bool EnabledForSyncSignin();
 
- private:
+ protected:
+  // Callable for tests.
   ChromePasswordManagerClient(content::WebContents* web_contents,
                               autofill::AutofillClient* autofill_client);
+
+ private:
+  enum AutofillForSyncCredentialsState {
+    ALLOW_SYNC_CREDENTIALS,
+    DISALLOW_SYNC_CREDENTIALS_FOR_REAUTH,
+    DISALLOW_SYNC_CREDENTIALS,
+  };
+
   friend class content::WebContentsUserData<ChromePasswordManagerClient>;
 
   // content::WebContentsObserver overrides.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // Callback method to be triggered when authentication is successful for a
   // given password authentication request.  If authentication is disabled or
   // not supported, this will be triggered directly.
   void CommitFillPasswordForm(autofill::PasswordFormFillData* fill_data);
 
   // Given |bounds| in the renderers coordinate system, return the same bounds
   // in the screens coordinate system.
   gfx::RectF GetBoundsInScreenSpace(const gfx::RectF& bounds);
 
   // Causes the password generation UI to be shown for the specified form.
   // The popup will be anchored at |element_bounds|. The generated password
   // will be no longer than |max_length|.
   void ShowPasswordGenerationPopup(const gfx::RectF& bounds,
                                    int max_length,
                                    const autofill::PasswordForm& form);
 
   // Causes the password editing UI to be shown anchored at |element_bounds|.
   void ShowPasswordEditingPopup(
       const gfx::RectF& bounds, const autofill::PasswordForm& form);
 
   // Sends a message to the renderer with the current value of
   // |can_use_log_router_|.
   void NotifyRendererOfLoggingAvailability();
 
+  // Returns true if the last loaded page was for transactional re-auth on a
+  // Google property.
+  bool LastLoadWasTransactionalReauthPage() const;
+
+  // Sets |autofill_state_| based on experiment and flag values.
+  void SetUpAutofillSyncState();
+
   Profile* const profile_;
 
   password_manager::ContentPasswordManagerDriver driver_;
 
   // Observer for password generation popup.
   autofill::PasswordGenerationPopupObserver* observer_;
 
   // Controls the popup
   base::WeakPtr<
     autofill::PasswordGenerationPopupControllerImpl> popup_controller_;
 
   // Allows authentication callbacks to be destroyed when this client is gone.
   base::WeakPtrFactory<ChromePasswordManagerClient> weak_factory_;
 
   // True if |this| is registered with some LogRouter which can accept logs.
   bool can_use_log_router_;
 
+  // How to handle the sync credential in ShouldFilterAutofillResult().
+  AutofillForSyncCredentialsState autofill_sync_state_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromePasswordManagerClient);
 };
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_CHROME_PASSWORD_MANAGER_CLIENT_H_