add src-rect-constraint to drawImageRect

Follow-on work
- unify around SrcRectConstraint (i.e. drawBitmapRect)
- remove silly drawBitmapRectToRect alias
- clean-up (possibly remove) alias problems around drawBitmapRect + IRect parameter

BUG=skia:

Review URL: https://codereview.chromium.org/1228083004

1 files changed, 1 insertions, 1 deletions

diff --git a/gm/bitmaprecttest.cpp b/gm/bitmaprecttest.cpp
index eaa7a3a743..6f2ccf211e 100644
--- a/gm/bitmaprecttest.cpp
+++ b/gm/bitmaprecttest.cpp
@@ -42,7 +42,7 @@ static void test_bitmaprect(SkCanvas* canvas) {
     SkScalar scale = 0.472560018f;
     canvas->save();
     canvas->scale(scale, scale);
-    canvas->drawBitmapRectToRect(bm, NULL, SkRect::MakeXYWH(100, 100, 128, 128), NULL);
+    canvas->drawBitmapRect(bm, SkRect::MakeXYWH(100, 100, 128, 128));
     canvas->restore();
 
     canvas->scale(-1, 1);