Standardize usage of virtual/override/final in extensions/

extensions/browser/lazy_background_task_queue_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 "extensions/browser/lazy_background_task_queue.h"
 
 #include "base/bind.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_browser_context.h"
@@ skipping 16 matching lines @@
 
 // A ProcessManager that doesn't create background host pages.
 class TestProcessManager : public ProcessManager {
  public:
   explicit TestProcessManager(BrowserContext* context)
       : ProcessManager(context, context, ExtensionRegistry::Get(context)),
         create_count_(0) {
     // ProcessManager constructor above assumes non-incognito.
     DCHECK(!context->IsOffTheRecord());
   }
-  virtual ~TestProcessManager() {}
+  ~TestProcessManager() override {}
 
   int create_count() { return create_count_; }
 
   // ProcessManager overrides:
-  virtual bool CreateBackgroundHost(const Extension* extension,
-                                    const GURL& url) override {
+  bool CreateBackgroundHost(const Extension* extension,
+                            const GURL& url) override {
     // Don't actually try to create a web contents.
     create_count_++;
     return false;
   }
 
  private:
   int create_count_;
 
   DISALLOW_COPY_AND_ASSIGN(TestProcessManager);
 };
 
 // A simple ExtensionSystem that returns a TestProcessManager.
 class MockExtensionSystemWithProcessManager : public MockExtensionSystem {
  public:
   explicit MockExtensionSystemWithProcessManager(BrowserContext* context)
       : MockExtensionSystem(context), test_process_manager_(context) {}
-  virtual ~MockExtensionSystemWithProcessManager() {}
+  ~MockExtensionSystemWithProcessManager() override {}
 
-  virtual ProcessManager* process_manager() override {
-    return &test_process_manager_;
-  }
+  ProcessManager* process_manager() override { return &test_process_manager_; }
 
  private:
   TestProcessManager test_process_manager_;
 };
 
 }  // namespace
 
 // Derives from ExtensionsTest to provide content module and keyed service
 // initialization.
 class LazyBackgroundTaskQueueTest : public ExtensionsTest {
@@ skipping 138 matching lines @@
   EXPECT_EQ(1u, queue.extensions_with_pending_tasks());
 
   // Processing tasks when there is one pending runs the task and removes the
   // extension from the list of extensions with pending tasks.
   queue.ProcessPendingTasks(NULL, browser_context(), extension.get());
   EXPECT_EQ(1, task_run_count());
   EXPECT_EQ(0u, queue.extensions_with_pending_tasks());
 }
 
 }  // namespace extensions