Move code to dump GrSurface as a png to helper files

src/gpu/GrAADistanceFieldPathRenderer.cpp

Index: src/gpu/GrAADistanceFieldPathRenderer.cpp
diff --git a/src/gpu/GrAADistanceFieldPathRenderer.cpp b/src/gpu/GrAADistanceFieldPathRenderer.cpp
index 95e4e7ac98d5a6f418220f959ce628c1841d6c17..ea763e5d334b14ea0554cb31a7261ad01680fccb 100755
--- a/src/gpu/GrAADistanceFieldPathRenderer.cpp
+++ b/src/gpu/GrAADistanceFieldPathRenderer.cpp
@@ -28,8 +28,10 @@
 #define NUM_PLOTS_X   (ATLAS_TEXTURE_WIDTH / PLOT_WIDTH)
 #define NUM_PLOTS_Y   (ATLAS_TEXTURE_HEIGHT / PLOT_HEIGHT)
 
+#ifdef SK_DEVELOPER

[scroggo, 2014/10/20 15:27:38]

This is a good change that can go in separately.

 SK_CONF_DECLARE(bool, c_DumpPathCache, "gpu.dumpPathCache", false,
                 "Dump the contents of the path cache before every purge.");
+#endif
 
 ////////////////////////////////////////////////////////////////////////////////
 GrAADistanceFieldPathRenderer::~GrAADistanceFieldPathRenderer() {
@@ -186,13 +188,13 @@ GrAADistanceFieldPathRenderer::PathData* GrAADistanceFieldPathRenderer::addPathT
                 goto HAS_ATLAS;
             }
         }
-    
-        if (c_DumpPathCache) {
+
 #ifdef SK_DEVELOPER
+        if (c_DumpPathCache) {
             GrTexture* texture = fAtlas->getTexture();
-            texture->surfacePriv().savePixels("pathcache.png");
-#endif
+            SkSaveGrSurfacePixelsAsPNG(texture, "pathcache.png");
         }
+#endif
         
         // before we purge the cache, we must flush any accumulated draws
         fContext->flush();