[Android] Disable 2 flaky TracingControllerTest tests

This CL disables EnableAndStopTracingWithEmptyFile and DoubleStopTracing
from TracingControllertest, as they are flaky on Android.
Builder:
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Marshmallow%2064%20bit%20Tester/23169

TBR=oysteine@chromium.org

Bug: 872631
Change-Id: I55612d42712a9867fce271efdefc920139a6972d
Reviewed-on: https://chromium-review.googlesource.com/1169209Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Boris Sazonov <bsazonov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581899}

content/browser/tracing/tracing_controller_browsertest.cc

@@ -487,7 +487,8 @@ IN_PROC_BROWSER_TEST_F(TracingControllerTest,
 }
 
 // TODO(crbug.com/871770): Disabled for failing on ASAN.
-#if defined(ADDRESS_SANITIZER)
+// TODO(crbug.com/872631): Disabled on Android as flaky.
+#if defined(ADDRESS_SANITIZER) || defined(OS_ANDROID)
 #define MAYBE_EnableAndStopTracingWithEmptyFile \
   DISABLED_EnableAndStopTracingWithEmptyFile
 #else
@@ -515,7 +516,8 @@ IN_PROC_BROWSER_TEST_F(TracingControllerTest,
 }
 
 // TODO(crbug.com/871770): Disabled for failing on ASAN.
-#if defined(ADDRESS_SANITIZER)
+// TODO(crbug.com/872631): Disabled on Android as flaky.
+#if defined(ADDRESS_SANITIZER) || defined(OS_ANDROID)
 #define MAYBE_DoubleStopTracing DISABLED_DoubleStopTracing
 #else
 #define MAYBE_DoubleStopTracing DoubleStopTracing