Revert of Make setVertexAttribs in GrDrawState take a stride parameter. (patchset #5 of https://codereview.chromium.org/511593004/)

Reason for revert:
GM failures on http://108.170.220.120:10115/builders/Test-Ubuntu12-ShuttleA-GTX660-x86-Release/builds/1867/

Original issue's description:
> Make setVertexAttribs in GrDrawState take a stride parameter.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/af013bf8afc4c77ab8ff230f536e2ade973427fa

R=bsalomon@google.com, egdaniel@google.com
TBR=bsalomon@google.com, egdaniel@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: djsollen@google.com

Review URL: https://codereview.chromium.org/502533004
diff --git a/src/gpu/GrAAConvexPathRenderer.cpp b/src/gpu/GrAAConvexPathRenderer.cpp
index c260382..b29c7c8 100644
--- a/src/gpu/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/GrAAConvexPathRenderer.cpp
@@ -674,7 +674,7 @@
     // Our computed verts should all be within one pixel of the segment control points.
     devBounds.outset(SK_Scalar1, SK_Scalar1);
 
-    drawState->setVertexAttribs<gPathAttribs>(SK_ARRAY_COUNT(gPathAttribs), sizeof(QuadVertex));
+    drawState->setVertexAttribs<gPathAttribs>(SK_ARRAY_COUNT(gPathAttribs));
 
     static const int kEdgeAttrIndex = 1;
     GrEffect* quadEffect = QuadEdgeEffect::Create();
@@ -684,6 +684,7 @@
     if (!arg.succeeded()) {
         return false;
     }
+    SkASSERT(sizeof(QuadVertex) == drawState->getVertexSize());
     verts = reinterpret_cast<QuadVertex*>(arg.vertices());
     idxs = reinterpret_cast<uint16_t*>(arg.indices());