[tracing] Mechanical rename of LevelOfDetail enum to enum class.

base/trace_event/memory_allocator_dump_unittest.cc

Index: base/trace_event/memory_allocator_dump_unittest.cc
diff --git a/base/trace_event/memory_allocator_dump_unittest.cc b/base/trace_event/memory_allocator_dump_unittest.cc
index 0c1417380227595abc37e8482377ddd8062014fd..8a41513af6ad8501baa97d13582deffe09067630 100644
--- a/base/trace_event/memory_allocator_dump_unittest.cc
+++ b/base/trace_event/memory_allocator_dump_unittest.cc
@@ -126,7 +126,7 @@ TEST(MemoryAllocatorDumpTest, GuidGeneration) {
 TEST(MemoryAllocatorDumpTest, DumpIntoProcessMemoryDump) {
   FakeMemoryAllocatorDumpProvider fmadp;
   ProcessMemoryDump pmd(make_scoped_refptr(new MemoryDumpSessionState()));
-  MemoryDumpArgs dump_args = {MemoryDumpArgs::LEVEL_OF_DETAIL_HIGH};
+  MemoryDumpArgs dump_args = {MemoryDumpArgs::LevelOfDetail::HIGH};
 
   fmadp.OnMemoryDump(dump_args, &pmd);