Disable LinkManagerAddTwiceAbandonTwiceUseTwice on all platforms

TBR=ryansturm@chromium.org

Bug: 1087736, 1087876
Change-Id: I42837be8d16e6534b97bb3e8fd6154d39411ab26
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2260397Reviewed-by: Chris Sharp <csharp@chromium.org>
Commit-Queue: Chris Sharp <csharp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#781484}

chrome/browser/prerender/prerender_unittest.cc

@@ -1576,15 +1576,8 @@ TEST_F(PrerenderTest, MAYBE_LinkManagerAddTwiceCancelTwice) {
 
 // TODO(gavinp): Update this test after abandon has an effect on Prerenders,
 // like shortening the timeouts.
-// Flaky on Android, crbug.com/1087876.
-#if defined(OS_ANDROID)
-#define MAYBE_LinkManagerAddTwiceAbandonTwiceUseTwice \
-  DISABLED_LinkManagerAddTwiceAbandonTwiceUseTwice
-#else
-#define MAYBE_LinkManagerAddTwiceAbandonTwiceUseTwice \
-  LinkManagerAddTwiceAbandonTwiceUseTwice
-#endif
-TEST_F(PrerenderTest, MAYBE_LinkManagerAddTwiceAbandonTwiceUseTwice) {
+// Flaky on Android and Linux, crbug.com/1087876 & crbug.com/1087736.
+TEST_F(PrerenderTest, DISABLED_LinkManagerAddTwiceAbandonTwiceUseTwice) {
   SetConcurrency(2);
   EXPECT_TRUE(IsEmptyPrerenderLinkManager());
   GURL url("http://www.myexample.com");