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

chrome/browser/ui/gtk/one_click_signin_bubble_gtk.cc

Index: chrome/browser/ui/gtk/one_click_signin_bubble_gtk.cc
diff --git a/chrome/browser/ui/gtk/one_click_signin_bubble_gtk.cc b/chrome/browser/ui/gtk/one_click_signin_bubble_gtk.cc
index 57bcca2896fe22a2c1cd14ca6293e8450d7bcd35..585351c389c6e882632d4a6c708d8ce52bd060f9 100644
--- a/chrome/browser/ui/gtk/one_click_signin_bubble_gtk.cc
+++ b/chrome/browser/ui/gtk/one_click_signin_bubble_gtk.cc
@@ -6,8 +6,9 @@
 
 #include <gtk/gtk.h>
 
-#include "base/i18n/rtl.h"
+#include "base/callback_helpers.h"
 #include "base/logging.h"
+#include "base/i18n/rtl.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/gtk/browser_toolbar_gtk.h"
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
@@ -26,11 +27,9 @@ const int kContentBorder = 7;
 
 OneClickSigninBubbleGtk::OneClickSigninBubbleGtk(
     BrowserWindowGtk* browser_window_gtk,
-    const base::Closure& learn_more_callback,
-    const base::Closure& advanced_callback)
+    const base::Callback<void(bool)>& start_sync_callback)
     : bubble_(NULL),
-      learn_more_callback_(learn_more_callback),
-      advanced_callback_(advanced_callback) {
+      start_sync_callback_(start_sync_callback) {
 
   // Setup the BubbleGtk content.
   GtkWidget* bubble_content = gtk_vbox_new(FALSE, 0);
@@ -49,18 +48,6 @@ OneClickSigninBubbleGtk::OneClickSigninBubbleGtk(
   GtkThemeService* const theme_provider = GtkThemeService::GetFrom(
       browser_window_gtk->browser()->profile());
 
-  GtkWidget* learn_more_line = gtk_hbox_new(FALSE, kContentBorder);
-  gtk_box_pack_start(GTK_BOX(bubble_content),
-                     learn_more_line, FALSE, FALSE, 0);
-
-  // Learn more link.
-  GtkWidget* learn_more_link = theme_provider->BuildChromeLinkButton(
-      l10n_util::GetStringUTF8(IDS_SYNC_PROMO_NTP_BUBBLE_LEARN_MORE));
-  g_signal_connect(learn_more_link, "clicked",
-                   G_CALLBACK(OnClickLearnMoreLinkThunk), this);
-  gtk_box_pack_start(GTK_BOX(learn_more_line),
-                     learn_more_link, FALSE, FALSE, 0);
-
   GtkWidget* bottom_line = gtk_hbox_new(FALSE, kContentBorder);
   gtk_box_pack_start(GTK_BOX(bubble_content),
                      bottom_line, FALSE, FALSE, 0);
@@ -81,6 +68,16 @@ OneClickSigninBubbleGtk::OneClickSigninBubbleGtk(
   gtk_box_pack_end(GTK_BOX(bottom_line),
                    ok_button, FALSE, FALSE, 0);
 
+  // Undo Button.
+  // TODO(akalin): at the moment, the OK and undo buttons are not the same
+  // size and look kind of ugly.  Figure out how to make it nicer.
+  GtkWidget* undo_button = gtk_button_new_with_label(
+      l10n_util::GetStringUTF8(IDS_ONE_CLICK_BUBBLE_UNDO).c_str());
+  g_signal_connect(undo_button, "clicked",
+                   G_CALLBACK(OnClickUndoThunk), this);
+  gtk_box_pack_end(GTK_BOX(bottom_line),
+                   undo_button, FALSE, FALSE, 0);
+
   GtkWidget* const app_menu_widget =
       browser_window_gtk->GetToolbar()->GetAppMenuButton();
   gfx::Rect bounds = gtk_util::WidgetBounds(app_menu_widget);
@@ -97,6 +94,9 @@ OneClickSigninBubbleGtk::OneClickSigninBubbleGtk(
 
 void OneClickSigninBubbleGtk::BubbleClosing(
     BubbleGtk* bubble, bool closed_by_escape) {
+  if (!start_sync_callback_.is_null())
+    base::ResetAndReturn(&start_sync_callback_).Run(true);
+
   delete this;
 }
 
@@ -104,26 +104,32 @@ void OneClickSigninBubbleGtk::ClickOKForTest() {
   OnClickOK(NULL);
 }
 
-void OneClickSigninBubbleGtk::ClickLearnMoreForTest() {
-  OnClickLearnMoreLink(NULL);
+void OneClickSigninBubbleGtk::ClickUndoForTest() {
+  OnClickUndo(NULL);
 }
 
 void OneClickSigninBubbleGtk::ClickAdvancedForTest() {
   OnClickAdvancedLink(NULL);
 }
 
-void OneClickSigninBubbleGtk::OnClickLearnMoreLink(GtkWidget* link) {
-  learn_more_callback_.Run();
+void OneClickSigninBubbleGtk::CloseForTest() {
   bubble_->Close();
 }
 
 void OneClickSigninBubbleGtk::OnClickAdvancedLink(GtkWidget* link) {
-  advanced_callback_.Run();
+  base::ResetAndReturn(&start_sync_callback_).Run(false);
   bubble_->Close();
 }
 
 void OneClickSigninBubbleGtk::OnClickOK(GtkWidget* link) {
+  base::ResetAndReturn(&start_sync_callback_).Run(true);
+  bubble_->Close();
+}
+
+void OneClickSigninBubbleGtk::OnClickUndo(GtkWidget* link) {
+  start_sync_callback_.Reset();
   bubble_->Close();
 }
 
-OneClickSigninBubbleGtk::~OneClickSigninBubbleGtk() {}
+OneClickSigninBubbleGtk::~OneClickSigninBubbleGtk() {
+}