Add high resolution WallTimer to SampleApp

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
 
 #include "SkOSMenu.h"
 #include "SkPath.h"
 #include "SkPicture.h"
 #include "SkPictureRecorder.h"
 #include "SkScalar.h"
 #include "SkTDArray.h"
 #include "SkTouchGesture.h"
 #include "SkWindow.h"
+#include "timer/Timer.h"
 
 class GrContext;
 class GrRenderTarget;
 
 class SkCanvas;
 class SkData;
 class SkDeferredCanvas;
 class SkDocument;
 class SkEvent;
 class SkTypeface;
@@ skipping 147 matching lines @@
     bool fSaveToPdf;
     bool fSaveToSKP;
     SkAutoTUnref<SkDocument> fPDFDocument;
 
     bool fUseClip;
     bool fAnimating;
     bool fRotate;
     bool fPerspAnim;
     bool fRequestGrabImage;
     bool fMeasureFPS;
-    SkMSec fMeasureFPS_Time;
-    SkMSec fMeasureFPS_StartTime;
+    WallTimer fTimer;
+    double fMeasureFPS_Time;
     bool fMagnify;
     int fTilingMode;
 
 
     SkOSMenu::TriState fPipeState;  // Mixed uses a tiled pipe
                                     // On uses a normal pipe
                                     // Off uses no pipe
     int  fUsePipeMenuItemID;
 
     // The following are for the 'fatbits' drawing
@@ skipping 34 matching lines @@
     void postAnimatingEvent();
     int findByTitle(const char*);
     void listTitles();
     SkSize tileSize() const;
     bool sendAnimatePulse();
 
     typedef SkOSWindow INHERITED;
 };
 
 #endif