Re-enable tabs_interactive_uitest for linux_aura

chrome/test/base/interactive_test_utils.h

Index: chrome/test/base/interactive_test_utils.h
diff --git a/chrome/test/base/interactive_test_utils.h b/chrome/test/base/interactive_test_utils.h
index f0ccc770f2a8cfae8ca6437cdfc83364527badf7..7970d7df4b2713aae4d5d66b3ead3cf83e58c805 100644
--- a/chrome/test/base/interactive_test_utils.h
+++ b/chrome/test/base/interactive_test_utils.h
@@ -21,8 +21,9 @@ class View;
 
 namespace ui_test_utils {
 
-// Brings the native window for |browser| to the foreground. Returns true on
-// success.
+// Brings the native window for |browser| to the foreground. If the internal

[sky, 2016/11/15 20:21:12]

How about modifying the first sentence to:
"Brings the native window for |browser| to the foreground and waits until the
browser is active."

And remove the second sentence.

[Qiang(Joe) Xu, 2016/11/15 22:42:29]

Done.

+// call of ShowAndFocusNativeWindow executes and is success, wait until browser
+// window is active. Returns true on success.
 bool BringBrowserWindowToFront(const Browser* browser) WARN_UNUSED_RESULT;
 
 // Returns true if the View is focused.