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

src/doc/SkDocument_PDF.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDocument.h"
 #include "SkPDFDocument.h"
 #include "SkPDFDevice.h"
@@ skipping 31 matching lines @@
         }
         if (fRasterDpi != 0) {
             fDevice->setRasterDpi(fRasterDpi);
         }
         fCanvas = SkNEW_ARGS(SkCanvas, (fDevice));
         fCanvas->clipRect(trimBox);
         fCanvas->translate(trimBox.x(), trimBox.y());
         return fCanvas;
     }
 
-    virtual void onEndPage() SK_OVERRIDE {
+    void onEndPage() SK_OVERRIDE {
         SkASSERT(fCanvas);
         SkASSERT(fDevice);
 
         fCanvas->flush();
         fDoc->appendPage(fDevice);
 
         fCanvas->unref();
         fDevice->unref();
 
         fCanvas = NULL;
         fDevice = NULL;
     }
 
-    virtual bool onClose(SkWStream* stream) SK_OVERRIDE {
+    bool onClose(SkWStream* stream) SK_OVERRIDE {
         SkASSERT(NULL == fCanvas);
         SkASSERT(NULL == fDevice);
 
         bool success = fDoc->emitPDF(stream);
         SkDELETE(fDoc);
         fDoc = NULL;
         return success;
     }
 
-    virtual void onAbort() SK_OVERRIDE {
+    void onAbort() SK_OVERRIDE {
         SkDELETE(fDoc);
         fDoc = NULL;
     }
 
 private:
     SkPDFDocument*  fDoc;
     SkPDFDevice*    fDevice;
     SkCanvas*       fCanvas;
     SkPicture::EncodeBitmap fEncoder;
     SkScalar        fRasterDpi;
@@ skipping 14 matching lines @@
 SkDocument* SkDocument::CreatePDF(const char path[],
                                   SkPicture::EncodeBitmap enc,
                                   SkScalar dpi) {
     SkFILEWStream* stream = SkNEW_ARGS(SkFILEWStream, (path));
     if (!stream->isValid()) {
         SkDELETE(stream);
         return NULL;
     }
     return SkNEW_ARGS(SkDocument_PDF, (stream, delete_wstream, enc, dpi));
 }