Remove code doing a no-op due to float -> int rounding.

chrome/browser/gtk/bookmark_bar_gtk.cc

Index: chrome/browser/gtk/bookmark_bar_gtk.cc
diff --git a/chrome/browser/gtk/bookmark_bar_gtk.cc b/chrome/browser/gtk/bookmark_bar_gtk.cc
index 32b26e00515339cd88f94561c48c19eced27ac5a..275b8e6a1407bc7e2a35d8d4124574623a4fe639 100644
--- a/chrome/browser/gtk/bookmark_bar_gtk.cc
+++ b/chrome/browser/gtk/bookmark_bar_gtk.cc
@@ -482,8 +482,9 @@ bool BookmarkBarGtk::IsAlwaysShown() {
 void BookmarkBarGtk::AnimationProgressed(const Animation* animation) {
   DCHECK_EQ(animation, slide_animation_.get());
 
-  gint height = animation->GetCurrentValue() *
-      (kBookmarkBarHeight - kBookmarkBarMinimumHeight) +
+  gint height =
+      static_cast<gint>(animation->GetCurrentValue() *
+                        (kBookmarkBarHeight - kBookmarkBarMinimumHeight)) +
       kBookmarkBarMinimumHeight;
   gtk_widget_set_size_request(event_box_.get(), -1, height);
 }