Make setVertexAttribs in GrDrawState take a stride parameter.

BUG=skia:
R=bsalomon@google.com

Author: egdaniel@google.com

Review URL: https://codereview.chromium.org/511593004
diff --git a/src/gpu/GrRODrawState.cpp b/src/gpu/GrRODrawState.cpp
index 1460f57..9118d0d 100644
--- a/src/gpu/GrRODrawState.cpp
+++ b/src/gpu/GrRODrawState.cpp
@@ -25,6 +25,7 @@
         this->fBlendConstant != that.fBlendConstant ||
         this->fFlagBits != that.fFlagBits ||
         this->fVACount != that.fVACount ||
+        this->fVAStride != that.fVAStride ||
         memcmp(this->fVAPtr, that.fVAPtr, this->fVACount * sizeof(GrVertexAttrib)) ||
         this->fStencilSettings != that.fStencilSettings ||
         this->fDrawFace != that.fDrawFace) {
@@ -50,7 +51,6 @@
         }
     }
 
-    SkASSERT(this->fVertexSize == that.fVertexSize);
     SkASSERT(0 == memcmp(this->fFixedFunctionVertexAttribIndices,
                             that.fFixedFunctionVertexAttribIndices,
                             sizeof(this->fFixedFunctionVertexAttribIndices)));