Add support for transformedLocalCoords to GrDefaultGeoProc

src/gpu/gl/GrGLGeometryProcessor.h

Index: src/gpu/gl/GrGLGeometryProcessor.h
diff --git a/src/gpu/gl/GrGLGeometryProcessor.h b/src/gpu/gl/GrGLGeometryProcessor.h
index 747d82ab4859f0b76f244562d4ae1a39671eb5d4..88baecf879886d3662752630396463da9df3b393 100644
--- a/src/gpu/gl/GrGLGeometryProcessor.h
+++ b/src/gpu/gl/GrGLGeometryProcessor.h
@@ -41,7 +41,7 @@ public:
     }
 
 protected:
-    // A helper for subclasses which don't have an explicit local matrix
+    // Emit a uniform matrix for each coord transform.
     void emitTransforms(GrGLGPBuilder* gp,
                         const GrShaderVar& posVar,
                         const char* localCoords,
@@ -50,6 +50,7 @@ protected:
         this->emitTransforms(gp, posVar, localCoords, SkMatrix::I(), tin, tout);
     }
 
+    // Emit pre-transformed coords as a vertex attribute per coord-transform.
     void emitTransforms(GrGLGPBuilder*,
                         const GrShaderVar& posVar,
                         const char* localCoords,
@@ -57,6 +58,12 @@ protected:
                         const TransformsIn&,
                         TransformsOut*);
 
+    // caller has emitted transforms via attributes
+    void emitTransforms(GrGLGPBuilder*,
+                        const char* localCoords,
+                        const TransformsIn& tin,
+                        TransformsOut* tout);
+
     struct GrGPArgs {
         // The variable used by a GP to store its position. It can be
         // either a vec2 or a vec3 depending on the presence of perspective.