Enable Clang warnings for implementation files on all platforms.

chrome/browser/history/android/android_cache_database_unittest.cc

 // Copyright (c) 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 "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/history/android/android_cache_database.h"
 #include "chrome/browser/history/android/android_time.h"
 #include "chrome/browser/history/history_database.h"
 #include "chrome/test/base/testing_profile.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Time;
 using base::TimeDelta;
 
 namespace history {
 
 class AndroidCacheDatabaseTest : public testing::Test {
  public:
   AndroidCacheDatabaseTest() {
   }
-  ~AndroidCacheDatabaseTest() {
-  }
+  virtual ~AndroidCacheDatabaseTest() {}
 
  protected:
   virtual void SetUp() {
     // Get a temporary directory for the test DB files.
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     base::FilePath history_db_name_ =
         temp_dir_.path().AppendASCII("history.db");
     android_cache_db_name_ = temp_dir_.path().AppendASCII(
         "TestAndroidCache.db");
     ASSERT_EQ(sql::INIT_OK, history_db_.Init(history_db_name_, NULL));
@@ skipping 71 matching lines @@
   EXPECT_FALSE(history_db_.GetSearchTerm(update_row1.term, NULL));
   // The search_term2 should still in the table.
   ASSERT_EQ(id2, history_db_.GetSearchTerm(search_term2, &row1));
   EXPECT_EQ(id2, row1.id);
   EXPECT_EQ(ToDatabaseTime(search_time2),
             ToDatabaseTime(row1.last_visit_time));
   EXPECT_EQ(search_term2, row1.term);
 }
 
 }  // namespace history