Break apart header files.

Create libart-gtest for common runtime and compiler gtest routines.
Rename CompilerCallbacksImpl that is quick compiler specific.
Rename trace clock source constants to not use the overloaded profiler term.

Change-Id: I4aac4bdc7e7850c68335f81e59a390133b54e933
diff --git a/runtime/noop_compiler_callbacks.h b/runtime/noop_compiler_callbacks.h
index 702b2e1..65498de 100644
--- a/runtime/noop_compiler_callbacks.h
+++ b/runtime/noop_compiler_callbacks.h
@@ -25,10 +25,15 @@
  public:
   NoopCompilerCallbacks() {}
   ~NoopCompilerCallbacks() {}
+
   bool MethodVerified(verifier::MethodVerifier* verifier) OVERRIDE {
     return true;
   }
+
   void ClassRejected(ClassReference ref) OVERRIDE {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(NoopCompilerCallbacks);
 };
 
 }  // namespace art