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

chrome/browser/signin/oauth2_token_service_unittest.cc

 // Copyright 2012 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 <string>
 
 #include "base/stringprintf.h"
 #include "chrome/browser/signin/oauth2_token_service.h"
 #include "chrome/browser/signin/oauth2_token_service_test_util.h"
 #include "chrome/browser/signin/token_service_factory.h"
@@ skipping 36 matching lines @@
   explicit TestOAuth2TokenService(net::URLRequestContextGetter* getter)
       : OAuth2TokenService(getter) {
   }
 
   // For testing: set the refresh token to be used.
   void set_refresh_token(const std::string& refresh_token) {
     refresh_token_ = refresh_token;
   }
 
  protected:
-  std::string GetRefreshToken() OVERRIDE {
-    return refresh_token_;
-  }
+  virtual std::string GetRefreshToken() OVERRIDE { return refresh_token_; }
 
  private:
   std::string refresh_token_;
 };
 
 class OAuth2TokenServiceTest : public TokenServiceTestHarness {
  public:
   OAuth2TokenServiceTest()
       : request_context_getter_(new net::TestURLRequestContextGetter(
             message_loop_.message_loop_proxy())) {
@@ skipping 344 matching lines @@
   EXPECT_EQ(1, consumer.number_of_errors_);
 
   fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_UNAUTHORIZED);
   fetcher->SetResponseString(std::string());
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(0, consumer.number_of_successful_tokens_);
   EXPECT_EQ(2, consumer.number_of_errors_);
 }