Narrow the distribution of GrDrawTarget a bit

include/gpu/GrPathRendererChain.h

Index: include/gpu/GrPathRendererChain.h
diff --git a/include/gpu/GrPathRendererChain.h b/include/gpu/GrPathRendererChain.h
index bacf2d45215df40098d42de9b06ee4b8456db1bd..a50160fba841ef62a3ce55dc3a83b8445eb36d34 100644
--- a/include/gpu/GrPathRendererChain.h
+++ b/include/gpu/GrPathRendererChain.h
@@ -12,9 +12,9 @@
 #include "SkTArray.h"
 
 class GrContext;
-class GrDrawTarget;
 class GrPathRenderer;
 class GrPipelineBuilder;
+class GrShaderCaps;
 class GrStrokeInfo;
 class SkMatrix;
 class SkPath;
@@ -55,7 +55,7 @@ public:
         is drawing the path to the stencil buffer then stencilSupport can be used to determine
         whether the path can be rendered with arbitrary stencil rules or not. See comments on
         StencilSupport in GrPathRenderer.h. */
-    GrPathRenderer* getPathRenderer(const GrDrawTarget* target,
+    GrPathRenderer* getPathRenderer(const GrShaderCaps* shaderCaps,
                                     const GrPipelineBuilder*,
                                     const SkMatrix& viewMatrix,
                                     const SkPath& path,