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/gm/aaclip.cpp b/gm/aaclip.cpp
index 8acd04d..b74f6d3 100644
--- a/gm/aaclip.cpp
+++ b/gm/aaclip.cpp
@@ -29,7 +29,7 @@
     SkBitmap bm;
     bm.setConfig(SkBitmap::kARGB_8888_Config, bounds.width(), bounds.height());
     bm.allocPixels();
-    bm.eraseColor(0);
+    bm.eraseColor(SK_ColorTRANSPARENT);
 
     SkCanvas* canvas = new SkCanvas(bm);
     canvas->translate(-SkIntToScalar(bounds.fLeft), -SkIntToScalar(bounds.fTop));