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

base/trace_event/memory_allocator_dump_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/trace_event/memory_allocator_dump.h"
 
 #include "base/format_macros.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/memory_allocator_dump_guid.h"
 #include "base/trace_event/memory_dump_provider.h"
@@ skipping 108 matching lines @@
   ASSERT_EQ(guid_bar, guid_bar_2);
 
   mad.reset(new MemoryAllocatorDump("baz", nullptr));
   const MemoryAllocatorDumpGuid guid_baz = mad->guid();
   ASSERT_NE(guid_bar, guid_baz);
 }
 
 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);
 
   ASSERT_EQ(3u, pmd.allocator_dumps().size());
 
   const MemoryAllocatorDump* root_heap =
       pmd.GetAllocatorDump("foobar_allocator");
   ASSERT_NE(nullptr, root_heap);
   EXPECT_EQ("foobar_allocator", root_heap->absolute_name());
   CheckScalar(root_heap, MemoryAllocatorDump::kNameSize,
@@ skipping 36 matching lines @@
   pmd.CreateAllocatorDump("foo_allocator");
   pmd.CreateAllocatorDump("bar_allocator/heap");
   ASSERT_DEATH(pmd.CreateAllocatorDump("foo_allocator"), "");
   ASSERT_DEATH(pmd.CreateAllocatorDump("bar_allocator/heap"), "");
   ASSERT_DEATH(pmd.CreateAllocatorDump(""), "");
 }
 #endif
 
 }  // namespace trace_event
 }  // namespace base