Warn on missing OVERRIDE/virtual everywhere, not just in header files.

webkit/fileapi/copy_or_move_file_validator_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 160 matching lines @@
 
 class TestCopyOrMoveFileValidatorFactory
     : public CopyOrMoveFileValidatorFactory {
  public:
   // A factory that creates validators that accept everything or nothing.
   TestCopyOrMoveFileValidatorFactory(bool all_valid) : all_valid_(all_valid) {}
   virtual ~TestCopyOrMoveFileValidatorFactory() {}
 
   virtual CopyOrMoveFileValidator* CreateCopyOrMoveFileValidator(
       const FileSystemURL& /*src_url*/,
-      const base::FilePath& /*platform_path*/) {
+      const base::FilePath& /*platform_path*/) OVERRIDE {
     return new TestCopyOrMoveFileValidator(all_valid_);
   }
 
  private:
   class TestCopyOrMoveFileValidator : public CopyOrMoveFileValidator {
    public:
     TestCopyOrMoveFileValidator(bool all_valid)
         : result_(all_valid ? base::PLATFORM_FILE_OK
                             : base::PLATFORM_FILE_ERROR_SECURITY) {
     }
     virtual ~TestCopyOrMoveFileValidator() {}
 
-    virtual void StartValidation(const ResultCallback& result_callback) {
+    virtual void StartValidation(
+        const ResultCallback& result_callback) OVERRIDE {
       // Post the result since a real validator must do work asynchronously.
       MessageLoop::current()->PostTask(FROM_HERE, base::Bind(result_callback,
                                                              result_));
     }
 
    private:
     base::PlatformFileError result_;
 
     DISALLOW_COPY_AND_ASSIGN(TestCopyOrMoveFileValidator);
   };
@@ skipping 65 matching lines @@
 
   scoped_ptr<CopyOrMoveFileValidatorFactory> accept_factory(
       new TestCopyOrMoveFileValidatorFactory(true /*accept_all*/));
   helper.SetMediaCopyOrMoveFileValidatorFactory(accept_factory.Pass());
 
   helper.CopyTest(base::PLATFORM_FILE_ERROR_SECURITY);
   helper.MoveTest(base::PLATFORM_FILE_ERROR_SECURITY);
 }
 
 }  // namespace fileapi