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/linear_alloc.cc b/runtime/linear_alloc.cc
index fe6bee6..43e81d9 100644
--- a/runtime/linear_alloc.cc
+++ b/runtime/linear_alloc.cc
@@ -23,6 +23,11 @@
 LinearAlloc::LinearAlloc(ArenaPool* pool) : lock_("linear alloc"), allocator_(pool) {
 }
 
+void* LinearAlloc::Realloc(Thread* self, void* ptr, size_t old_size, size_t new_size) {
+  MutexLock mu(self, lock_);
+  return allocator_.Realloc(ptr, old_size, new_size);
+}
+
 void* LinearAlloc::Alloc(Thread* self, size_t size) {
   MutexLock mu(self, lock_);
   return allocator_.Alloc(size);
@@ -33,4 +38,14 @@
   return allocator_.BytesUsed();
 }
 
+ArenaPool* LinearAlloc::GetArenaPool() {
+  MutexLock mu(Thread::Current(), lock_);
+  return allocator_.GetArenaPool();
+}
+
+bool LinearAlloc::Contains(void* ptr) const {
+  MutexLock mu(Thread::Current(), lock_);
+  return allocator_.Contains(ptr);
+}
+
 }  // namespace art