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/GrBitmapTextContext.cpp b/src/gpu/GrBitmapTextContext.cpp
index c992b95..17439b5 100755
--- a/src/gpu/GrBitmapTextContext.cpp
+++ b/src/gpu/GrBitmapTextContext.cpp
@@ -40,6 +40,8 @@
     {kVec2f_GrVertexAttribType, sizeof(SkPoint) , kEffect_GrVertexAttribBinding}
 };
 
+static const size_t kTextVASize = 2 * sizeof(SkPoint); 
+
 // position + color + texture coord
 extern const GrVertexAttrib gTextVertexWithColorAttribs[] = {
     {kVec2f_GrVertexAttribType,  0,                                 kPosition_GrVertexAttribBinding},
@@ -47,6 +49,8 @@
     {kVec2f_GrVertexAttribType,  sizeof(SkPoint) + sizeof(GrColor), kEffect_GrVertexAttribBinding}
 };
 
+static const size_t kTextVAColorSize = 2 * sizeof(SkPoint) + sizeof(GrColor); 
+
 };
 
 GrBitmapTextContext::GrBitmapTextContext(GrContext* context,
@@ -176,10 +180,12 @@
     bool useColorVerts = kA8_GrMaskFormat == fStrike->getMaskFormat();
     if (useColorVerts) {
         fDrawTarget->drawState()->setVertexAttribs<gTextVertexWithColorAttribs>(
-                                                    SK_ARRAY_COUNT(gTextVertexWithColorAttribs));
+                                                    SK_ARRAY_COUNT(gTextVertexWithColorAttribs),
+                                                    kTextVAColorSize);
     } else {
         fDrawTarget->drawState()->setVertexAttribs<gTextVertexAttribs>(
-                                                    SK_ARRAY_COUNT(gTextVertexAttribs));
+                                                    SK_ARRAY_COUNT(gTextVertexAttribs),
+                                                    kTextVASize);
     }
     fVertexCount = 4*fSkPaint.textToGlyphs(text, byteLength, NULL);
     bool success = fDrawTarget->reserveVertexAndIndexSpace(fVertexCount,
@@ -559,7 +565,7 @@
     size_t vertSize = useColorVerts ? (2 * sizeof(SkPoint) + sizeof(GrColor)) :
                                       (2 * sizeof(SkPoint));
 
-    SkASSERT(vertSize == fDrawTarget->getDrawState().getVertexSize());
+    SkASSERT(vertSize == fDrawTarget->getDrawState().getVertexStride());
 
     SkPoint* positions = reinterpret_cast<SkPoint*>(
         reinterpret_cast<intptr_t>(fVertices) + vertSize * fCurrVertex);