Disable flaky WakeLockAcquireAndCancel.

Flaky on multiple platforms. Disabling.

TBR=qinmin@chromium.org

Bug: 1064435
Change-Id: I3692b20bda7ff481d9502b02df84b3f877ec77f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2416449Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#807881}

chrome/browser/download/download_browsertest.cc

@@ -4176,7 +4176,10 @@ IN_PROC_BROWSER_TEST_F(DownloadTest, CrossOriginDownloadNavigatesIframe) {
   ASSERT_TRUE(origin_three.ShutdownAndWaitUntilComplete());
 }
 
-IN_PROC_BROWSER_TEST_F(DownloadWakeLockTest, WakeLockAcquireAndCancel) {
+// Test is flaky on multiple platforms.
+// https://crbug.com/1064435
+IN_PROC_BROWSER_TEST_F(DownloadWakeLockTest,
+                       DISABLED_WakeLockAcquireAndCancel) {
   Initialize();
   EXPECT_EQ(0, GetActiveWakeLocks(
                    device::mojom::WakeLockType::kPreventAppSuspension));