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/context.h b/runtime/arch/context.h
index f86f9ae..9ef761e 100644
--- a/runtime/arch/context.h
+++ b/runtime/arch/context.h
@@ -42,7 +42,7 @@
   // Reads values from callee saves in the given frame. The frame also holds
   // the method that holds the layout.
   virtual void FillCalleeSaves(const StackVisitor& fr)
-      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0;
+      SHARED_REQUIRES(Locks::mutator_lock_) = 0;
 
   // Sets the stack pointer value.
   virtual void SetSP(uintptr_t new_sp) = 0;