Move arenas into runtime

Moved arena pool into the runtime.

Motivation:
Allow GC to use arena allocators, recycle arena pool for linear alloc.

Bug: 19264997
Change-Id: I8ddbb6d55ee923a980b28fb656c758c5d7697c2f
diff --git a/compiler/optimizing/linearize_test.cc b/compiler/optimizing/linearize_test.cc
index eb27965..f22b7a7 100644
--- a/compiler/optimizing/linearize_test.cc
+++ b/compiler/optimizing/linearize_test.cc
@@ -16,6 +16,7 @@
 
 #include <fstream>
 
+#include "base/arena_allocator.h"
 #include "base/stringprintf.h"
 #include "builder.h"
 #include "code_generator.h"
@@ -29,7 +30,6 @@
 #include "pretty_printer.h"
 #include "ssa_builder.h"
 #include "ssa_liveness_analysis.h"
-#include "utils/arena_allocator.h"
 
 #include "gtest/gtest.h"