[Sheriff] Disable PowerBookmarkDatabaseImplTest tests

Disable:
- PowerBookmarkDatabaseImplTest.GetPowerOverviewsForTypeDeserializingProtoFails
- PowerBookmarkDatabaseImplTest.GetPowersForURLDeserializingProtoFails

This CL changes the target build bot from Linux to MSAN for the disabled
tests which were
incorrectly targeted before in crrev.com/c/4023424.

Bug: 1383289
Change-Id: I7b489312356ff1c0b1a753d97171b9d979b70965
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4023290
Reviewed-by: Michael Ershov <miersh@google.com>
Commit-Queue: Martin Rodriguez <rodmartin@google.com>
Owners-Override: Martin Rodriguez <rodmartin@google.com>
Cr-Commit-Position: refs/heads/main@{#1070262}

components/power_bookmarks/storage/power_bookmark_database_impl_unittest.cc

@@ -273,7 +273,7 @@ TEST_F(PowerBookmarkDatabaseImplTest, GetPowersForURLUnspecifiedType) {
 }
 
 // // TODO(crbug.com/1383289): Re-enable this test.
-#if BUILDFLAG(IS_LINUX)
+#if defined(MEMORY_SANITIZER)
 #define MAYBE_GetPowersForURLDeserializingProtoFails \
   DISABLED_GetPowersForURLDeserializingProtoFails
 #else
@@ -339,7 +339,7 @@ TEST_F(PowerBookmarkDatabaseImplTest, GetPowerOverviewsForType) {
   EXPECT_EQ(1u, power_overviews[1]->count());
 }
 // // TODO(crbug.com/1383289): Re-enable this test.
-#if BUILDFLAG(IS_LINUX)
+#if defined(MEMORY_SANITIZER)
 #define MAYBE_GetPowerOverviewsForTypeDeserializingProtoFails \
   DISABLED_GetPowerOverviewsForTypeDeserializingProtoFails
 #else