change gpudevice and pdfdevice to inherit from basedevice

src/utils/SkGatherPixelRefsAndRects.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGatherPixelRefsAndRects_DEFINED
 #define SkGatherPixelRefsAndRects_DEFINED
 
@@ skipping 21 matching lines @@
     }
 
     virtual ~SkGatherPixelRefsAndRectsDevice() {
         SkSafeUnref(fPRCont);
     }
 
     virtual SkImageInfo imageInfo() const SK_OVERRIDE {
         return fEmptyBitmap.info();
     }
 
-    virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE { return NULL; }
-
 protected:
-    virtual bool filterTextFlags(const SkPaint& paint, TextFlags*) SK_OVERRIDE {
-        return false;
-    }
     virtual void clear(SkColor color) SK_OVERRIDE {
         NothingToDo();
     }
     virtual void drawPaint(const SkDraw& draw, const SkPaint& paint) SK_OVERRIDE {
         SkBitmap bm;
 
         if (GetBitmapFromPaint(paint, &bm)) {
             SkRect clipRect = SkRect::Make(draw.fRC->getBounds());
             fPRCont->add(bm.pixelRef(), clipRect);
         }
@@ skipping 254 matching lines @@
         NotSupported();
     }
 
     virtual SkBaseDevice* onCreateDevice(const SkImageInfo& info, Usage usage) SK_OVERRIDE {
         // we expect to only get called via savelayer, in which case it is fine.
         SkASSERT(kSaveLayer_Usage == usage);
         return SkNEW_ARGS(SkGatherPixelRefsAndRectsDevice,
                           (info.width(), info.height(), fPRCont));
     }
 
-    virtual void flush() SK_OVERRIDE {}
-
     static void NotSupported() {
         SkDEBUGFAIL("this method should never be called");
     }
 
     static void NothingToDo() {}
 
     typedef SkBaseDevice INHERITED;
 };
 
 #endif // SkGatherPixelRefsAndRects_DEFINED