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/SampleApp.cpp b/samplecode/SampleApp.cpp
index 0943d77..cc06e04 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -468,7 +468,7 @@
         SkBitmap bm;
         bm.setConfig(SkBitmap::kA8_Config, 64, 64);
         bm.allocPixels();
-        bm.eraseColor(0);
+        bm.eraseColor(SK_ColorTRANSPARENT);
 
         SkCanvas canvas(bm);