Use 'final' and 'override' specifiers directly in ART.

Remove all uses of macros 'FINAL' and 'OVERRIDE' and replace them with
'final' and 'override' specifiers. Remove all definitions of these
macros as well, which were located in these files:
- libartbase/base/macros.h
- test/913-heaps/heaps.cc
- test/ti-agent/ti_macros.h

ART is now using C++14; the 'final' and 'override' specifiers have
been introduced in C++11.

Test: mmma art
Change-Id: I256c7758155a71a2940ef2574925a44076feeebf
diff --git a/compiler/optimizing/intrinsics_mips64.h b/compiler/optimizing/intrinsics_mips64.h
index 748b0b0..ca8bc8f 100644
--- a/compiler/optimizing/intrinsics_mips64.h
+++ b/compiler/optimizing/intrinsics_mips64.h
@@ -30,14 +30,14 @@
 class CodeGeneratorMIPS64;
 class Mips64Assembler;
 
-class IntrinsicLocationsBuilderMIPS64 FINAL : public IntrinsicVisitor {
+class IntrinsicLocationsBuilderMIPS64 final : public IntrinsicVisitor {
  public:
   explicit IntrinsicLocationsBuilderMIPS64(CodeGeneratorMIPS64* codegen);
 
   // Define visitor methods.
 
 #define OPTIMIZING_INTRINSICS(Name, IsStatic, NeedsEnvironmentOrCache, SideEffects, Exceptions, ...) \
-  void Visit ## Name(HInvoke* invoke) OVERRIDE;
+  void Visit ## Name(HInvoke* invoke) override;
 #include "intrinsics_list.h"
   INTRINSICS_LIST(OPTIMIZING_INTRINSICS)
 #undef INTRINSICS_LIST
@@ -55,14 +55,14 @@
   DISALLOW_COPY_AND_ASSIGN(IntrinsicLocationsBuilderMIPS64);
 };
 
-class IntrinsicCodeGeneratorMIPS64 FINAL : public IntrinsicVisitor {
+class IntrinsicCodeGeneratorMIPS64 final : public IntrinsicVisitor {
  public:
   explicit IntrinsicCodeGeneratorMIPS64(CodeGeneratorMIPS64* codegen) : codegen_(codegen) {}
 
   // Define visitor methods.
 
 #define OPTIMIZING_INTRINSICS(Name, IsStatic, NeedsEnvironmentOrCache, SideEffects, Exceptions, ...) \
-  void Visit ## Name(HInvoke* invoke) OVERRIDE;
+  void Visit ## Name(HInvoke* invoke) override;
 #include "intrinsics_list.h"
   INTRINSICS_LIST(OPTIMIZING_INTRINSICS)
 #undef INTRINSICS_LIST