Fix up all the easy virtual ... SK_OVERRIDE cases.

tests/PDFPrimitivesTest.cpp

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkData.h"
@@ skipping 417 matching lines @@
     test_issue1083();
 
     TestImages(reporter);
 }
 
 namespace {
 
 class DummyImageFilter : public SkImageFilter {
 public:
     DummyImageFilter(bool visited = false) : SkImageFilter(0, NULL), fVisited(visited) {}
-    virtual ~DummyImageFilter() SK_OVERRIDE {}
+    ~DummyImageFilter() SK_OVERRIDE {}
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
                                SkBitmap* result, SkIPoint* offset) const {
         fVisited = true;
         offset->fX = offset->fY = 0;
         *result = src;
         return true;
     }
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DummyImageFilter)
     bool visited() const { return fVisited; }
@@ skipping 27 matching lines @@
 
     // Filter just created; should be unvisited.
     REPORTER_ASSERT(reporter, !filter->visited());
     SkPaint paint;
     paint.setImageFilter(filter.get());
     canvas.drawRect(SkRect::MakeWH(100, 100), paint);
 
     // Filter was used in rendering; should be visited.
     REPORTER_ASSERT(reporter, filter->visited());
 }