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

chrome/browser/gtk/bookmark_manager_gtk.cc

Index: chrome/browser/gtk/bookmark_manager_gtk.cc
diff --git a/chrome/browser/gtk/bookmark_manager_gtk.cc b/chrome/browser/gtk/bookmark_manager_gtk.cc
index 7c894767d300086b4325fe3eda650db138b2bff7..390fda22872dddf6f9b2df01d67b0017822c2c0a 100644
--- a/chrome/browser/gtk/bookmark_manager_gtk.cc
+++ b/chrome/browser/gtk/bookmark_manager_gtk.cc
@@ -1185,7 +1185,9 @@ gboolean BookmarkManagerGtk::OnRightTreeViewButtonPress(
 
   GtkTreePath* path;
   gtk_tree_view_get_path_at_pos(GTK_TREE_VIEW(tree_view),
-                                event->x, event->y, &path, NULL, NULL, NULL);
+                                static_cast<gint>(event->x),
+                                static_cast<gint>(event->y),
+                                &path, NULL, NULL, NULL);
 
   if (path == NULL)
     return TRUE;
@@ -1209,10 +1211,10 @@ gboolean BookmarkManagerGtk::OnRightTreeViewMotion(
     return FALSE;
 
   if (gtk_drag_check_threshold(tree_view,
-                               bm->mousedown_event_.x,
-                               bm->mousedown_event_.y,
-                               event->x,
-                               event->y)) {
+                               static_cast<gint>(bm->mousedown_event_.x),
+                               static_cast<gint>(bm->mousedown_event_.y),
+                               static_cast<gint>(event->x),
+                               static_cast<gint>(event->y))) {
     bm->delaying_mousedown_ = false;
     GtkTargetList* targets = GtkDndUtil::GetTargetListFromCodeMask(
         GtkDndUtil::CHROME_BOOKMARK_ITEM |