replace OVERRIDE and FINAL with override and final in components/

components/enhanced_bookmarks/image_store_util_ios.mm

Index: components/enhanced_bookmarks/image_store_util_ios.mm
diff --git a/components/enhanced_bookmarks/image_store_util_ios.mm b/components/enhanced_bookmarks/image_store_util_ios.mm
index 4b27dcebf77a4a9cfef315b443d63eec25a4cc20..8e6b53f3afbcdbf539918b90b3268b6b4b6a0ef7 100644
--- a/components/enhanced_bookmarks/image_store_util_ios.mm
+++ b/components/enhanced_bookmarks/image_store_util_ios.mm
@@ -16,11 +16,11 @@ class RefCountedNSDataMemory : public base::RefCountedMemory {
  public:
   explicit RefCountedNSDataMemory(NSData* memory) : data_([memory retain]) {}
 
-  virtual const unsigned char* front() const OVERRIDE {
+  virtual const unsigned char* front() const override {
     return reinterpret_cast<const unsigned char*>([data_ bytes]);
   }
 
-  virtual size_t size() const OVERRIDE {
+  virtual size_t size() const override {
     return [data_ length];
   }