GWP-ASan: Narrow Android test exceptions

Several tests failed on the android-asan bot. Disable the crash handler
tests only on the android-asan bot, not other android bots. For the
guarded page allocator tests, re-enable and use fewer threads on
Android. (This will give us some more head room on non-ASan low end
devices as well.)

Bug: 993168
Change-Id: I290ec7d9322e862f1bd69068f1898d4fe47547fb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1755403
Auto-Submit: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#687335}

components/gwp_asan/client/guarded_page_allocator_unittest.cc

@@ -288,13 +288,12 @@ class ThreadedHighContentionDelegate
 
 // Test that allocator remains in consistent state under high contention and
 // doesn't double-allocate pages or fail to deallocate pages.
+TEST_P(GuardedPageAllocatorTest, ThreadedHighContention) {
 #if defined(OS_ANDROID)
-#define MAYBE_ThreadedHighContention DISABLED_ThreadedHighContention
+  constexpr size_t num_threads = 200;
 #else
-#define MAYBE_ThreadedHighContention ThreadedHighContention
-#endif
-TEST_P(GuardedPageAllocatorTest, MAYBE_ThreadedHighContention) {
   constexpr size_t num_threads = 1000;
+#endif
   {
     base::DelegateSimpleThreadPool threads("page_writers", num_threads);
     threads.Start();

components/gwp_asan/crash_handler/crash_handler_unittest.cc

@@ -352,12 +352,12 @@ class CrashHandlerTest : public base::MultiProcessTest,
   bool gwp_asan_found_;
 };
 
-#if (defined(ADDRESS_SANITIZER) && defined(OS_WIN)) || defined(OS_ANDROID)
+#if defined(ADDRESS_SANITIZER) && (defined(OS_WIN) || defined(OS_ANDROID))
 // ASan intercepts crashes and crashpad doesn't have a chance to see them.
 #define MAYBE_DISABLED(name) DISABLED_ ##name
 #else
 #define MAYBE_DISABLED(name) name
-#endif  // defined(ADDRESS_SANITIZER) && defined(OS_WIN)
+#endif
 
 TEST_P(CrashHandlerTest, MAYBE_DISABLED(UseAfterFree)) {
   ASSERT_TRUE(gwp_asan_found_);