OK, here's john's patch plus my sync stuff.

chrome/browser/ui/webui/bookmarks_ui_browsertest.cc

Index: chrome/browser/ui/webui/bookmarks_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/bookmarks_ui_browsertest.cc b/chrome/browser/ui/webui/bookmarks_ui_browsertest.cc
index 3ac942d95dde57371d55cf0a854a4a440dcf1257..80c8dfca6ae6692ec4134330a9e5f64066f65c2d 100644
--- a/chrome/browser/ui/webui/bookmarks_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/bookmarks_ui_browsertest.cc
@@ -59,8 +59,16 @@ IN_PROC_BROWSER_TEST_F(BookmarksTest, CommandOpensBookmarksTab) {
   AssertIsBookmarksPage(browser()->tab_strip_model()->GetActiveWebContents());
 }
 
+// TODO(linux_aura) http://crbug.com/163931
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_AURA)
+#define MAYBE_CommandAgainGoesBackToBookmarksTab DISABLED_CommandAgainGoesBackToBookmarksTab
+#else
+#define MAYBE_CommandAgainGoesBackToBookmarksTab CommandAgainGoesBackToBookmarksTab
+#endif
+
 // If this flakes on Mac, use: http://crbug.com/87200
-IN_PROC_BROWSER_TEST_F(BookmarksTest, CommandAgainGoesBackToBookmarksTab) {
+IN_PROC_BROWSER_TEST_F(BookmarksTest,
+                       MAYBE_CommandAgainGoesBackToBookmarksTab) {
   ui_test_utils::NavigateToURL(
       browser(),
       ui_test_utils::GetTestUrl(base::FilePath(),