stop using deprecated bitmap::config for gpu

BUG=skia:
R=bsalomon@google.com

Author: reed@google.com

Review URL: https://codereview.chromium.org/248473006

git-svn-id: http://skia.googlecode.com/svn/trunk@14330 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrTextureStripAtlas.cpp b/src/gpu/effects/GrTextureStripAtlas.cpp
index 877215e..0aa9dc3 100644
--- a/src/gpu/effects/GrTextureStripAtlas.cpp
+++ b/src/gpu/effects/GrTextureStripAtlas.cpp
@@ -158,7 +158,7 @@
         fDesc.fContext->writeTexturePixels(fTexture,
                                            0,  rowNumber * fDesc.fRowHeight,
                                            fDesc.fWidth, fDesc.fRowHeight,
-                                           SkBitmapConfig2GrPixelConfig(data.config()),
+                                           SkImageInfo2GrPixelConfig(data.info()),
                                            data.getPixels(),
                                            data.rowBytes(),
                                            GrContext::kDontFlush_PixelOpsFlag);