Remove unused matrix param from GrContext/GrDrawTarget rect drawing functions.

src/gpu/GrDrawTarget.cpp

Index: src/gpu/GrDrawTarget.cpp
diff --git a/src/gpu/GrDrawTarget.cpp b/src/gpu/GrDrawTarget.cpp
index fd5e476c4ea402fc4396053b4ef994483479cf86..f8bb910cd85d4073f84e0b4b4aeb9527f858f876 100644
--- a/src/gpu/GrDrawTarget.cpp
+++ b/src/gpu/GrDrawTarget.cpp
@@ -696,15 +696,9 @@ void set_vertex_attributes(GrDrawState* drawState, bool hasUVs) {
 };
 
 void GrDrawTarget::onDrawRect(const SkRect& rect,
-                              const SkMatrix* matrix,
                               const SkRect* localRect,
                               const SkMatrix* localMatrix) {
 
-    GrDrawState::AutoViewMatrixRestore avmr;
-    if (NULL != matrix) {
-        avmr.set(this->drawState(), *matrix);
-    }
-
     set_vertex_attributes(this->drawState(), NULL != localRect);
 
     AutoReleaseGeometry geo(this, 4, 0);