call notifyPixelsChanged() when the pages are flipped in pageflippixelref
update samples



git-svn-id: http://skia.googlecode.com/svn/trunk@192 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleImageDir.cpp b/samplecode/SampleImageDir.cpp
index 922910c..e221fe1 100644
--- a/samplecode/SampleImageDir.cpp
+++ b/samplecode/SampleImageDir.cpp
@@ -234,21 +234,12 @@
             DrawRoundRect(*canvas);
             return;
         }
-        
-        SkScalar scale = SK_Scalar1 * 999/1000;
-//        scale = SK_Scalar1/2;
-        
+    
         canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
-   //     canvas->scale(scale, scale);
         
         SkScalar x = SkIntToScalar(32), y = SkIntToScalar(32);
         SkPaint paint;
-        
-    //    x += fDX;
-    //    y += fDY;
-    
-//        paint.setLooper(new SkBlurDrawLooper(SkIntToScalar(12), 0, 0, 0xDD000000))->unref();
-        
+
 #if 0
         for (int i = 0; i < fBitmapCount; i++) {
             SkPaint p;