Update more directories under src/ to follow C++11 style rule for {virtual,override}.

src/doc/SkDocument_XPS.cpp

 /*
  * Copyright 2015 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 "SkXPSDevice.h"
 #include "SkStream.h"
@@ skipping 10 matching lines @@
         fPixelsPerMeter.set(pixelsPerMeterScale, pixelsPerMeterScale);
         fDevice.beginPortfolio(stream);
     }
 
     virtual ~SkDocument_XPS() {
         // subclasses must call close() in their destructors
         this->close();
     }
 
 protected:
-    virtual SkCanvas* onBeginPage(SkScalar width,
-                                  SkScalar height,
-                                  const SkRect& trimBox) override {
+    SkCanvas* onBeginPage(SkScalar width,
+                          SkScalar height,
+                          const SkRect& trimBox) override {
         fDevice.beginSheet(fUnitsPerMeter, fPixelsPerMeter,
                            SkSize::Make(width, height));
         fCanvas.reset(SkNEW_ARGS(SkCanvas, (&fDevice)));
         fCanvas->clipRect(trimBox);
         fCanvas->translate(trimBox.x(), trimBox.y());
         return fCanvas.get();
     }
 
     void onEndPage() override {
         SkASSERT(fCanvas.get());
@@ skipping 26 matching lines @@
     SkDELETE(stream);
 }
 
 SkDocument* SkDocument::CreateXPS(const char path[], SkScalar dpi) {
     SkAutoTDelete<SkFILEWStream> stream(SkNEW_ARGS(SkFILEWStream, (path)));
     if (!stream->isValid()) {
         return NULL;
     }
     return SkNEW_ARGS(SkDocument_XPS, (stream.detach(), delete_wstream, dpi));
 }