Update behavior of one-click infobar to remove modal dialog, add "undo".

chrome/browser/ui/views/sync/one_click_signin_bubble_view.h

Index: chrome/browser/ui/views/sync/one_click_signin_bubble_view.h
diff --git a/chrome/browser/ui/views/sync/one_click_signin_bubble_view.h b/chrome/browser/ui/views/sync/one_click_signin_bubble_view.h
index 53abb0f595f161520079331ebbc1a4ffcf69c7ec..a365121f1ff68c6cf4f7fe1d37e5d937eb551fb3 100644
--- a/chrome/browser/ui/views/sync/one_click_signin_bubble_view.h
+++ b/chrome/browser/ui/views/sync/one_click_signin_bubble_view.h
@@ -28,11 +28,11 @@ class OneClickSigninBubbleView : public views::BubbleDelegateView,
                                  public views::ButtonListener {
  public:
   // Show the one-click signin bubble if not already showing.  The bubble
-  // will be placed visually beneath |anchor_view|.  The |browser| is used
-  // to open links.
+  // will be placed visually beneath |anchor_view|.  The closures are called
+  // to open the corresponding links, and the callback is used to start sync.
+  // The bool argument indicates if default sync settings should be used.
   static void ShowBubble(views::View* anchor_view,
-                         const base::Closure& learn_more_callback,
-                         const base::Closure& advanced_callback);
+                         const base::Callback<void(bool)>& start_sync);
 
   static bool IsShowing();
 
@@ -43,18 +43,18 @@ class OneClickSigninBubbleView : public views::BubbleDelegateView,
   static OneClickSigninBubbleView* view_for_testing() { return bubble_view_; }
 
   // The following accessor message should only be used for testing.
-  views::Link* learn_more_link_for_testing() const { return learn_more_link_; }
   views::Link* advanced_link_for_testing() const { return advanced_link_; }
-  views::TextButton* close_button_for_testing() const { return close_button_; }
+  views::TextButton* ok_button_for_testing() const { return ok_button_; }
+  views::TextButton* undo_button_for_testing() const { return undo_button_; }
   void set_message_loop_for_testing(MessageLoop* loop) {
     message_loop_for_testing_ = loop;
   }
 
  private:
   // Creates a BookmarkBubbleView.
-  OneClickSigninBubbleView(views::View* anchor_view,
-                           const base::Closure& learn_more_callback,
-                           const base::Closure& advanced_callback);
+  OneClickSigninBubbleView(
+      views::View* anchor_view,
+      const base::Callback<void(bool)>& start_sync_callback);
 
   virtual ~OneClickSigninBubbleView();
 
@@ -78,18 +78,14 @@ class OneClickSigninBubbleView : public views::BubbleDelegateView,
   // The bubble, if we're showing one.
   static OneClickSigninBubbleView* bubble_view_;
 
-  // Link to web page to learn more about sync.
-  views::Link* learn_more_link_;
-
   // Link to sync setup advanced page.
   views::Link* advanced_link_;
 
-  // Button to close the window.
-  views::TextButton* close_button_;
+  // Controls at buttom of bubble.
+  views::TextButton* ok_button_;
+  views::TextButton* undo_button_;
 
-  // The callbacks for the links.
-  base::Closure learn_more_callback_;
-  base::Closure advanced_callback_;
+  base::Callback<void(bool)> start_sync_callback_;
 
   // A message loop used only with unit tests.
   MessageLoop* message_loop_for_testing_;