Use 8-byte increment bracket sizes for rosalloc thread local runs.

Very small space savings (< 1%) after device boot and up to 10%
allocation speedup.

Some minor cleanup.

Bug: 9986565

Change-Id: I51d791c4674d6944fe9a7ee78537ac3490c1a02c
diff --git a/runtime/entrypoints_order_test.cc b/runtime/entrypoints_order_test.cc
index f87d48d..e72809b 100644
--- a/runtime/entrypoints_order_test.cc
+++ b/runtime/entrypoints_order_test.cc
@@ -127,7 +127,7 @@
     EXPECT_OFFSET_DIFFP(Thread, tlsPtr_, mterp_default_ibase, mterp_alt_ibase, sizeof(void*));
     EXPECT_OFFSET_DIFFP(Thread, tlsPtr_, mterp_alt_ibase, rosalloc_runs, sizeof(void*));
     EXPECT_OFFSET_DIFFP(Thread, tlsPtr_, rosalloc_runs, thread_local_alloc_stack_top,
-                        sizeof(void*) * kNumRosAllocThreadLocalSizeBrackets);
+                        sizeof(void*) * kNumRosAllocThreadLocalSizeBracketsInThread);
     EXPECT_OFFSET_DIFFP(Thread, tlsPtr_, thread_local_alloc_stack_top, thread_local_alloc_stack_end,
                         sizeof(void*));
     EXPECT_OFFSET_DIFFP(Thread, tlsPtr_, thread_local_alloc_stack_end, held_mutexes, sizeof(void*));