Move to newer clang annotations

Also enable -Wthread-safety-negative.

Changes:
Switch to capabilities and negative capabilities.

Future work:
Use capabilities to implement uninterruptible annotations to work
with AssertNoThreadSuspension.

Bug: 20072211

Change-Id: I42fcbe0300d98a831c89d1eff3ecd5a7e99ebf33
diff --git a/runtime/arch/mips/context_mips.h b/runtime/arch/mips/context_mips.h
index d01b95e..38cf29a 100644
--- a/runtime/arch/mips/context_mips.h
+++ b/runtime/arch/mips/context_mips.h
@@ -34,7 +34,7 @@
 
   void Reset() OVERRIDE;
 
-  void FillCalleeSaves(const StackVisitor& fr) OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+  void FillCalleeSaves(const StackVisitor& fr) OVERRIDE SHARED_REQUIRES(Locks::mutator_lock_);
 
   void SetSP(uintptr_t new_sp) OVERRIDE {
     SetGPR(SP, new_sp);