Re-add isIRect test for AA rect drawing

include/gpu/GrAARectRenderer.h

Index: include/gpu/GrAARectRenderer.h
===================================================================
--- include/gpu/GrAARectRenderer.h	(revision 9127)
+++ include/gpu/GrAARectRenderer.h	(working copy)
@@ -42,6 +42,7 @@
                     GrDrawTarget* target,
                     const GrRect& rect,
                     const SkMatrix& combinedMatrix,
+                    const GrRect& devRect,
                     bool useVertexCoverage) {
 #ifdef SHADER_AA_FILL_RECT
         if (combinedMatrix.rectStaysRect()) {
@@ -54,7 +55,7 @@
 #else
         this->geometryFillAARect(gpu, target,
                                  rect, combinedMatrix,
-                                 useVertexCoverage);
+                                 devRect, useVertexCoverage);
 #endif
     }
 
@@ -62,6 +63,7 @@
                       GrDrawTarget* target,
                       const GrRect& rect,
                       const SkMatrix& combinedMatrix,
+                      const GrRect& devRect,
                       const GrVec& devStrokeSize,
                       bool useVertexCoverage);
 
@@ -80,6 +82,7 @@
                             GrDrawTarget* target,
                             const GrRect& rect,
                             const SkMatrix& combinedMatrix,
+                            const GrRect& devRect,
                             bool useVertexCoverage);
 
     void shaderFillAARect(GrGpu* gpu,