Defining new color constat for transparent color
Review URL: https://codereview.appspot.com/6901044

git-svn-id: http://skia.googlecode.com/svn/trunk@6696 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleOvalTest.cpp b/samplecode/SampleOvalTest.cpp
index 340acf6..88b7d5f 100644
--- a/samplecode/SampleOvalTest.cpp
+++ b/samplecode/SampleOvalTest.cpp
@@ -45,7 +45,7 @@
         SkCanvas canvas(fBitmap);
         SkPaint p;
 
-        fBitmap.eraseColor(0);
+        fBitmap.eraseColor(SK_ColorTRANSPARENT);
         canvas.drawOval(SkRect::MakeSize(fSize), p);
     }