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/scheduler_arm64.h b/compiler/optimizing/scheduler_arm64.h
index 0d2f8d9..7f6549d 100644
--- a/compiler/optimizing/scheduler_arm64.h
+++ b/compiler/optimizing/scheduler_arm64.h
@@ -118,7 +118,7 @@
   M(DataProcWithShifterOp, unused)
 
 #define DECLARE_VISIT_INSTRUCTION(type, unused)  \
-  void Visit##type(H##type* instruction) OVERRIDE;
+  void Visit##type(H##type* instruction) override;
 
   FOR_EACH_SCHEDULED_COMMON_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
   FOR_EACH_SCHEDULED_ABSTRACT_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
@@ -136,9 +136,9 @@
  public:
   explicit HSchedulerARM64(SchedulingNodeSelector* selector)
       : HScheduler(&arm64_latency_visitor_, selector) {}
-  ~HSchedulerARM64() OVERRIDE {}
+  ~HSchedulerARM64() override {}
 
-  bool IsSchedulable(const HInstruction* instruction) const OVERRIDE {
+  bool IsSchedulable(const HInstruction* instruction) const override {
 #define CASE_INSTRUCTION_KIND(type, unused) case \
   HInstruction::InstructionKind::k##type:
     switch (instruction->GetKind()) {
@@ -160,7 +160,7 @@
   // SIMD&FP registers are callee saved) so don't reorder such vector instructions.
   //
   // TODO: remove this when a proper support of SIMD registers is introduced to the compiler.
-  bool IsSchedulingBarrier(const HInstruction* instr) const OVERRIDE {
+  bool IsSchedulingBarrier(const HInstruction* instr) const override {
     return HScheduler::IsSchedulingBarrier(instr) ||
            instr->IsVecReduce() ||
            instr->IsVecExtractScalar() ||