Adding isOpaque method to skia shader classes
REVIEW=http://codereview.appspot.com/5451102/
TEST=unit test ShaderOpacity
git-svn-id: http://skia.googlecode.com/svn/trunk@2840 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/core/SkBitmapProcShader.h b/src/core/SkBitmapProcShader.h
index 9af9d2e..cd70279 100644
--- a/src/core/SkBitmapProcShader.h
+++ b/src/core/SkBitmapProcShader.h
@@ -18,6 +18,7 @@
SkBitmapProcShader(const SkBitmap& src, TileMode tx, TileMode ty);
// overrides from SkShader
+ virtual bool isOpaque() const SK_OVERRIDE;
virtual bool setContext(const SkBitmap&, const SkPaint&, const SkMatrix&);
virtual uint32_t getFlags() { return fFlags; }
virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count);