replace OVERRIDE and FINAL with override and final in athena/

athena/resource_manager/delegate/resource_manager_delegate.cc

Index: athena/resource_manager/delegate/resource_manager_delegate.cc
diff --git a/athena/resource_manager/delegate/resource_manager_delegate.cc b/athena/resource_manager/delegate/resource_manager_delegate.cc
index e58aaacdefeb4278c03662fd406ba0138741d2d9..6b68594db2b1e12855985c6dd2307ffcaec96991 100644
--- a/athena/resource_manager/delegate/resource_manager_delegate.cc
+++ b/athena/resource_manager/delegate/resource_manager_delegate.cc
@@ -24,7 +24,7 @@ class ResourceManagerDelegateImpl : public ResourceManagerDelegate {
   virtual ~ResourceManagerDelegateImpl() {}
 
  private:
-  virtual int GetUsedMemoryInPercent() OVERRIDE {
+  virtual int GetUsedMemoryInPercent() override {
     base::SystemMemoryInfoKB info;
     if (!base::GetSystemMemoryInfo(&info)) {
       LOG(WARNING) << "Cannot determine the free memory of the system.";
@@ -61,7 +61,7 @@ class ResourceManagerDelegateImpl : public ResourceManagerDelegate {
     return percentage;
   }
 
-  virtual int MemoryPressureIntervalInMS() OVERRIDE {
+  virtual int MemoryPressureIntervalInMS() override {
     return kMemoryPressureIntervalMs;
   }
   DISALLOW_COPY_AND_ASSIGN(ResourceManagerDelegateImpl);