Encode quickening info in .vdex.

We quicken vdex files for performance reasons, but when taking an OTA,
we need to revert the quickening to the original instructions. As vdex
should be independent of the oat file and oat file versions, we encode
the quickening data in the vdex.

test: m test-art-host-jit m test-art-host-gtest
bug:30937355

Change-Id: I9a543a161b70aa1cff99f8fe6f5b5cab7a6c4d31
diff --git a/runtime/vdex_file.cc b/runtime/vdex_file.cc
index 9fbf875..b3dab58 100644
--- a/runtime/vdex_file.cc
+++ b/runtime/vdex_file.cc
@@ -34,9 +34,12 @@
   return (memcmp(version_, kVdexVersion, sizeof(kVdexVersion)) == 0);
 }
 
-VdexFile::Header::Header(uint32_t dex_size, uint32_t verifier_deps_size)
+VdexFile::Header::Header(uint32_t dex_size,
+                         uint32_t verifier_deps_size,
+                         uint32_t quickening_info_size)
     : dex_size_(dex_size),
-      verifier_deps_size_(verifier_deps_size) {
+      verifier_deps_size_(verifier_deps_size),
+      quickening_info_size_(quickening_info_size) {
   memcpy(magic_, kVdexMagic, sizeof(kVdexMagic));
   memcpy(version_, kVdexVersion, sizeof(kVdexVersion));
   DCHECK(IsMagicValid());