Fix for PNG, coding style, skip opaque.

samplecode/SampleUnpremul.cpp

Index: samplecode/SampleUnpremul.cpp
diff --git a/samplecode/SampleUnpremul.cpp b/samplecode/SampleUnpremul.cpp
index c6244cf042d00f223a0cb0bdccb47e9506508373..dfdd2accdbcd2466cf1e3de20cf24f943cd59981 100644
--- a/samplecode/SampleUnpremul.cpp
+++ b/samplecode/SampleUnpremul.cpp
@@ -28,7 +28,7 @@ extern SkShader* createChecker();
  *  Interprets c as an unpremultiplied color, and returns the
  *  premultiplied equivalent.
  */
-SkPMColor SkPreMultiplyUnPMColor(SkPMColor c) {
+static SkPMColor premultiply_unpmcolor(SkPMColor c) {
     U8CPU a = SkGetPackedA32(c);
     U8CPU r = SkGetPackedR32(c);
     U8CPU g = SkGetPackedG32(c);
@@ -132,7 +132,7 @@ protected:
             }
             for (int i = 0; i < fBitmap.width(); ++i) {
                 for (int j = 0; j < fBitmap.height(); ++j) {
-                    *bm.getAddr32(i, j) = SkPreMultiplyUnPMColor(*fBitmap.getAddr32(i, j));
+                    *bm.getAddr32(i, j) = premultiply_unpmcolor(*fBitmap.getAddr32(i, j));
                 }
             }
             canvas->drawBitmap(bm, 0, 0);