Disable flaky test GeneratesWhenOverThreshold on Android.

UserLevelMemoryPressureSignalGeneratorTest.GeneratesWhenOverThreshold
has been flaky for a few days, disable it.

TBR=dcheng@chromium.org

Bug: 1054788
Change-Id: I5c16cdbf17316f6475e43d11d754006d194d970f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2083829Reviewed-by: Xing Liu <xingliu@chromium.org>
Commit-Queue: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746150}

third_party/blink/renderer/controller/user_level_memory_pressure_signal_generator_test.cc

@@ -6,6 +6,7 @@
 
 #include "base/test/scoped_feature_list.h"
 #include "base/test/test_mock_time_task_runner.h"
+#include "build/build_config.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/blink/public/common/features.h"
@@ -90,7 +91,14 @@ class UserLevelMemoryPressureSignalGeneratorTest : public testing::Test {
 
 constexpr double kMemoryThresholdBytes = 1024 * 1024 * 1024;
 
-TEST_F(UserLevelMemoryPressureSignalGeneratorTest, GeneratesWhenOverThreshold) {
+// Flaky on Android, see crbug/1054788.
+#if defined(OS_ANDROID)
+#define MAYBE_GeneratesWhenOverThreshold DISABLED_GeneratesWhenOverThreshold
+#else
+#define MAYBE_GeneratesWhenOverThreshold GeneratesWhenOverThreshold
+#endif
+TEST_F(UserLevelMemoryPressureSignalGeneratorTest,
+       MAYBE_GeneratesWhenOverThreshold) {
   {
     std::unique_ptr<MockMemoryUsageMonitor> mock_memory_usage_monitor =
         std::make_unique<MockMemoryUsageMonitor>();