Move mirror::ArtMethod to native

Optimizing + quick tests are passing, devices boot.

TODO: Test and fix bugs in mips64.

Saves 16 bytes per most ArtMethod, 7.5MB reduction in system PSS.
Some of the savings are from removal of virtual methods and direct
methods object arrays.

Bug: 19264997
Change-Id: I622469a0cfa0e7082a2119f3d6a9491eb61e3f3d
diff --git a/runtime/arch/mips/quick_entrypoints_mips.S b/runtime/arch/mips/quick_entrypoints_mips.S
index c00d6cb..9e1dab6 100644
--- a/runtime/arch/mips/quick_entrypoints_mips.S
+++ b/runtime/arch/mips/quick_entrypoints_mips.S
@@ -523,7 +523,7 @@
     lw    $a1, 4($sp)           # copy arg value for a1
     lw    $a2, 8($sp)           # copy arg value for a2
     lw    $a3, 12($sp)          # copy arg value for a3
-    lw    $t9, MIRROR_ART_METHOD_QUICK_CODE_OFFSET_32($a0)  # get pointer to the code
+    lw    $t9, ART_METHOD_QUICK_CODE_OFFSET_32($a0)  # get pointer to the code
     jalr  $t9                   # call the method
     sw    $zero, 0($sp)         # store null for method* at bottom of frame
     move  $sp, $fp              # restore the stack