replace OVERRIDE and FINAL with override and final in extensions/

extensions/shell/common/shell_extensions_client.cc

Index: extensions/shell/common/shell_extensions_client.cc
diff --git a/extensions/shell/common/shell_extensions_client.cc b/extensions/shell/common/shell_extensions_client.cc
index 039841320dd8215f6899af07bdbd9d75effda48b..f27cd09e720ac974a1d0f49c23b7507efbfce5ef 100644
--- a/extensions/shell/common/shell_extensions_client.cc
+++ b/extensions/shell/common/shell_extensions_client.cc
@@ -41,26 +41,26 @@ class ShellPermissionMessageProvider : public PermissionMessageProvider {
   // PermissionMessageProvider implementation.
   virtual PermissionMessages GetPermissionMessages(
       const PermissionSet* permissions,
-      Manifest::Type extension_type) const OVERRIDE {
+      Manifest::Type extension_type) const override {
     return PermissionMessages();
   }
 
   virtual std::vector<base::string16> GetWarningMessages(
       const PermissionSet* permissions,
-      Manifest::Type extension_type) const OVERRIDE {
+      Manifest::Type extension_type) const override {
     return std::vector<base::string16>();
   }
 
   virtual std::vector<base::string16> GetWarningMessagesDetails(
       const PermissionSet* permissions,
-      Manifest::Type extension_type) const OVERRIDE {
+      Manifest::Type extension_type) const override {
     return std::vector<base::string16>();
   }
 
   virtual bool IsPrivilegeIncrease(
       const PermissionSet* old_permissions,
       const PermissionSet* new_permissions,
-      Manifest::Type extension_type) const OVERRIDE {
+      Manifest::Type extension_type) const override {
     // Ensure we implement this before shipping.
     CHECK(false);
     return false;