Linux/ChromeOS Chromium style checker cleanup, chrome/browser/extensions edition.

chrome/browser/extensions/api/usb/usb_apitest.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 "chrome/browser/extensions/api/usb/usb_api.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/usb/usb_service.h"
 #include "chrome/browser/usb/usb_service_factory.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 50 matching lines @@
 #pragma warning(pop)
 #endif
 
 class UsbApiTest : public ExtensionApiTest {
  public:
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     ExtensionApiTest::SetUpCommandLine(command_line);
     command_line->AppendSwitch(switches::kEnableExperimentalExtensionApis);
   }
 
-  void SetUpOnMainThread() OVERRIDE {
+  virtual void SetUpOnMainThread() OVERRIDE {
     mock_device_ = new MockUsbDevice();
     extensions::UsbFindDevicesFunction::SetDeviceForTest(mock_device_.get());
   }
 
  protected:
   scoped_refptr<MockUsbDevice> mock_device_;
 };
 
 }  // namespace
 
@@ skipping 34 matching lines @@
       .WillOnce(InvokeUsbTransferCallback<5>(USB_TRANSFER_TIMEOUT));
   EXPECT_CALL(*mock_device_, Close(_)).Times(AnyNumber());
   ASSERT_TRUE(RunExtensionTest("usb/transfer_failure"));
 }
 
 IN_PROC_BROWSER_TEST_F(UsbApiTest, InvalidLengthTransfer) {
   EXPECT_CALL(*mock_device_, Close(_)).Times(AnyNumber());
   ASSERT_TRUE(RunExtensionTest("usb/invalid_length_transfer"));
 }