Make the new Gaia password separated signin flow modal.

chrome/browser/ui/views/profiles/signin_view_controller.h

Index: chrome/browser/ui/views/profiles/signin_view_controller.h
diff --git a/chrome/browser/ui/views/profiles/signin_view_controller.h b/chrome/browser/ui/views/profiles/signin_view_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..668be1489e9e2141e059bb48dbfbc618742a1d76
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+++ b/chrome/browser/ui/views/profiles/signin_view_controller.h
@@ -0,0 +1,58 @@
+// Copyright 2015 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_UI_VIEWS_PROFILES_SIGNIN_VIEW_CONTROLLER_H_
+#define CHROME_BROWSER_UI_VIEWS_PROFILES_SIGNIN_VIEW_CONTROLLER_H_
+
+#include "base/macros.h"
+#include "base/observer_list.h"
+#include "chrome/browser/ui/profile_chooser_constants.h"
+
+class Browser;
+class ModalSigninDelegate;
+class Profile;
+
+namespace content {
+class WebContentsDelegate;
+}
+
+namespace views {
+class WebView;
+}
+
+class SigninViewController {
+ public:
+  SigninViewController();
+  ~SigninViewController();
+
+  // Returns true if the signin flow should be shown as tab-modal for |mode|.
+  static bool ShouldShowModalSigninForMode(profiles::BubbleViewMode mode);
+
+  // Creates the web view that contains the signin flow in |mode| using
+  // |profile| as the web content's profile, then sets |delegate| as the created
+  // web content's delegate.
+  static views::WebView* CreateGaiaWebView(
+      content::WebContentsDelegate* delegate,
+      profiles::BubbleViewMode mode,
+      Profile* profile);
+
+  // Shows the signin flow as a tab modal dialog attached to |browser|'s active
+  // web contents.
+  void ShowModalSignin(profiles::BubbleViewMode mode, Browser* browser);
+
+  // Closes the tab-modal signin flow previously shown using this
+  // SigninViewController, if one exists. Does nothing otherwise.
+  void CloseModalSignin();
+
+  // Notifies this object that it's |modal_signin_delegate_| member has become
+  // invalid.
+  void ResetModalSigninDelegate();
+
+ private:
+   ModalSigninDelegate* modal_signin_delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(SigninViewController);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_PROFILES_SIGNIN_VIEW_CONTROLLER_H_