Fix style checker errors after https://codereview.chromium.org/1263403002/

base/profiler/win32_stack_frame_unwinder.h

 // Copyright 2015 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.
 
 #ifndef BASE_PROFILER_WIN32_STACK_FRAME_UNWINDER_H_
 #define BASE_PROFILER_WIN32_STACK_FRAME_UNWINDER_H_
 
 #include <windows.h>
 
 #include "base/base_export.h"
@@ skipping 27 matching lines @@
     UnwindFunctions();
 
    private:
     DISALLOW_COPY_AND_ASSIGN(UnwindFunctions);
   };
 
   class BASE_EXPORT Win32UnwindFunctions : public UnwindFunctions {
    public:
     Win32UnwindFunctions();
 
-    virtual PRUNTIME_FUNCTION LookupFunctionEntry(DWORD64 program_counter,
-                                                  PDWORD64 image_base) override;
+    PRUNTIME_FUNCTION LookupFunctionEntry(DWORD64 program_counter,
+                                          PDWORD64 image_base) override;
 
-    virtual void VirtualUnwind(DWORD64 image_base, DWORD64 program_counter,
-                               PRUNTIME_FUNCTION runtime_function,
-                               CONTEXT* context) override;
+    void VirtualUnwind(DWORD64 image_base,
+                       DWORD64 program_counter,
+                       PRUNTIME_FUNCTION runtime_function,
+                       CONTEXT* context) override;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(Win32UnwindFunctions);
   };
 
   Win32StackFrameUnwinder();
   ~Win32StackFrameUnwinder();
 
   bool TryUnwind(CONTEXT* context);
 
  private:
   // This function is for test purposes only.
   Win32StackFrameUnwinder(UnwindFunctions* unwind_functions);
   friend class Win32StackFrameUnwinderTest;
 
   // State associated with each stack unwinding.
   bool at_top_frame_;
   bool unwind_info_present_for_all_frames_;
   const void* pending_blacklisted_module_;
 
   Win32UnwindFunctions win32_unwind_functions_;
   UnwindFunctions* const unwind_functions_;
 
   DISALLOW_COPY_AND_ASSIGN(Win32StackFrameUnwinder);
 };
 
 }  // namespace base
 
 #endif  // BASE_PROFILER_WIN32_STACK_FRAME_UNWINDER_H_