quick fix to land clear() change

experimental/PdfViewer/SkTrackDevice.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTrackDevice_DEFINED
 #define SkTrackDevice_DEFINED
 
@@ skipping 21 matching lines @@
     virtual ~SkTrackDevice() {}
 
     // Install a tracker - we can reuse the tracker between multiple devices, and the state of the
     // tracker is preserved - number and location of poinbts, ...
     void installTracker(SkTracker* tracker) {
         fTracker = tracker;
         fTracker->newFrame();
     }
 
 protected:
+#if 0   // clear is deprecated (and private)
     virtual void clear(SkColor color) {
         before();
         INHERITED::clear(color);
         after();
     }
+#endif
 
     virtual void drawPaint(const SkDraw& dummy1, const SkPaint& paint) {
         before();
         INHERITED::drawPaint(dummy1, paint);
         after();
     }
 
     virtual void drawPoints(const SkDraw& dummy1, SkCanvas::PointMode mode, size_t count,
                             const SkPoint dummy2[], const SkPaint& paint) {
         before();
@@ skipping 110 matching lines @@
         }
     }
 
 private:
     SkTracker* fTracker;
 
     typedef SkBitmapDevice INHERITED;
 };
 
 #endif  // SkTrackDevice_DEFINED