Remove isIRect "optimization" & defer computation of device Rect in AA rect rendering

src/gpu/GrAARectRenderer.cpp

Index: src/gpu/GrAARectRenderer.cpp
===================================================================
--- src/gpu/GrAARectRenderer.cpp	(revision 9079)
+++ src/gpu/GrAARectRenderer.cpp	(working copy)
@@ -364,7 +364,6 @@
                                           GrDrawTarget* target,
                                           const GrRect& rect,
                                           const SkMatrix& combinedMatrix,
-                                          const GrRect& devRect,
                                           bool useVertexCoverage) {
     GrDrawState* drawState = target->drawState();
 
@@ -389,6 +388,9 @@
     GrPoint* fan0Pos = reinterpret_cast<GrPoint*>(verts);
     GrPoint* fan1Pos = reinterpret_cast<GrPoint*>(verts + 4 * vsize);
 
+    SkRect devRect;
+    combinedMatrix.mapRect(&devRect, rect);
+
     if (combinedMatrix.rectStaysRect()) {
         set_inset_fan(fan0Pos, vsize, devRect, -SK_ScalarHalf, -SK_ScalarHalf);
         set_inset_fan(fan1Pos, vsize, devRect,  SK_ScalarHalf,  SK_ScalarHalf);
@@ -616,16 +618,20 @@
 
 void GrAARectRenderer::strokeAARect(GrGpu* gpu,
                                     GrDrawTarget* target,
-                                    const GrRect& devRect,
+                                    const GrRect& rect,
+                                    const SkMatrix& combinedMatrix,
                                     const GrVec& devStrokeSize,
                                     bool useVertexCoverage) {
     GrDrawState* drawState = target->drawState();
 
-    const SkScalar& dx = devStrokeSize.fX;
-    const SkScalar& dy = devStrokeSize.fY;
+    const SkScalar dx = devStrokeSize.fX;
+    const SkScalar dy = devStrokeSize.fY;
     const SkScalar rx = SkScalarMul(dx, SK_ScalarHalf);
     const SkScalar ry = SkScalarMul(dy, SK_ScalarHalf);
 
+    SkRect devRect;
+    combinedMatrix.mapRect(&devRect, rect);
+
     SkScalar spare;
     {
         SkScalar w = devRect.width() - dx;
@@ -634,9 +640,8 @@
     }
 
     if (spare <= 0) {
-        GrRect r(devRect);
-        r.inset(-rx, -ry);
-        this->fillAARect(gpu, target, r, SkMatrix::I(), r, useVertexCoverage);
+        devRect.inset(-rx, -ry);
+        this->fillAARect(gpu, target, devRect, SkMatrix::I(), useVertexCoverage);
         return;
     }