Enable BookmarkUtilsTest.CopyPaste() test case for aura builds.

chrome/browser/bookmarks/bookmark_utils_unittest.cc

Index: chrome/browser/bookmarks/bookmark_utils_unittest.cc
diff --git a/chrome/browser/bookmarks/bookmark_utils_unittest.cc b/chrome/browser/bookmarks/bookmark_utils_unittest.cc
index ae7ef2430c8a72ecba267fa887e63317c35f11f1..4eb78dbaaea9a7aa1ef327ef63a1857b94a26eb7 100644
--- a/chrome/browser/bookmarks/bookmark_utils_unittest.cc
+++ b/chrome/browser/bookmarks/bookmark_utils_unittest.cc
@@ -126,9 +126,6 @@ TEST(BookmarkUtilsTest, DoesBookmarkContainText) {
 // TODO(wyck): Functionality disabled on TOUCH_UI to work around clipboard hang
 // in http://crbug.com/96448
 #define MAYBE_CopyPaste FAILS_CopyPaste
-#elif defined(USE_AURA) && !defined(OS_WIN)
-// Clipboard not yet implemented on Linux Aura, see http://crbug.com/100348
-#define MAYBE_CopyPaste FAILS_CopyPaste
 #else
 #define MAYBE_CopyPaste CopyPaste
 #endif