add surfaceprops to SkWindow, and 'D' to toggle distancefieldfonts

samplecode/SampleApp.h

 /*
  * Copyright 2011 Skia
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SampleApp_DEFINED
 #define SampleApp_DEFINED
 
@@ skipping 100 matching lines @@
         return surface;
     }
 
     virtual void draw(SkCanvas*) SK_OVERRIDE;
 
     void setDeviceType(DeviceType type);
     void toggleRendering();
     void toggleSlideshow();
     void toggleFPS();
     void showOverview();
+    void toggleDistanceFieldFonts();
 
     GrContext* getGrContext() const { return fDevManager->getGrContext(); }
 
     void setZoomCenter(float x, float y);
     void changeZoomLevel(float delta);
     bool nextSample();
     bool previousSample();
     bool goToSample(int i);
     SkString getSampleTitle(int i);
     int  sampleCount();
@@ skipping 104 matching lines @@
     void postAnimatingEvent();
     void installDrawFilter(SkCanvas*);
     int findByTitle(const char*);
     void listTitles();
     SkSize tileSize() const;
 
     typedef SkOSWindow INHERITED;
 };
 
 #endif