[Sheriff] Disable BookmarksCommandManagerTest.All on Linux Tests (dbg)

Because this file has multiple tests with the same name ('All') and an
existing MAYBE_All macro, rename the test to 'AllBCM' to avoid macro
collision.

TBR=tommycli@chromium.org

Bug: 1010381
Change-Id: I475153dc2ec05fb737fe59a7568c619ebfdc68da
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1878530Reviewed-by: Stephen McGruer <smcgruer@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Stephen McGruer <smcgruer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709052}

chrome/test/data/webui/bookmarks/bookmarks_browsertest.js

@@ -72,7 +72,14 @@ BookmarksCommandManagerTest.prototype = {
   ]),
 };
 
-TEST_F('BookmarksCommandManagerTest', 'All', function() {
+// https://crbug.com/1010381: Flaky on Linux Tests (dbg)
+GEN('#if defined(OS_LINUX) && !defined(NDEBUG)');
+GEN('#define MAYBE_AllBCM DISABLED_AllBCM');
+GEN('#else');
+GEN('#define MAYBE_AllBCM AllBCM');
+GEN('#endif');
+
+TEST_F('BookmarksCommandManagerTest', 'MAYBE_AllBCM', function() {
   mocha.run();
 });