Change undefined SkGpuRenderTarget and SkGpuTexture forward declares to GrRenderTarget and GrTextur…

include/core/SkPixelRef.h

Index: include/core/SkPixelRef.h
diff --git a/include/core/SkPixelRef.h b/include/core/SkPixelRef.h
index 89ce69ae5bd1a9e020bf38df1653583a6436f094..0487e426109a2e84381e84aff4638ec0c6eccfb3 100644
--- a/include/core/SkPixelRef.h
+++ b/include/core/SkPixelRef.h
@@ -34,8 +34,7 @@ class SkData;
 struct SkIRect;
 class SkMutex;
 
-// this is an opaque class, not interpreted by skia
-class SkGpuTexture;
+class GrTexture;
 
 /** \class SkPixelRef
 
@@ -144,7 +143,7 @@ public:
 
     /** Are we really wrapping a texture instead of a bitmap?
      */
-    virtual SkGpuTexture* getTexture() { return NULL; }
+    virtual GrTexture* getTexture() { return NULL; }
 
     bool readPixels(SkBitmap* dst, const SkIRect* subset = NULL);