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/utils/arena_allocator_test.cc b/compiler/utils/arena_allocator_test.cc
index 7156540..7065527 100644
--- a/compiler/utils/arena_allocator_test.cc
+++ b/compiler/utils/arena_allocator_test.cc
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
+#include "base/arena_allocator.h"
 #include "gtest/gtest.h"
-#include "utils/arena_allocator.h"
 #include "utils/arena_bit_vector.h"
 
 namespace art {