[debugger] Add visualization of center rect for drawBitmapNine calls

src/utils/debugger/SkDrawCommand.cpp

Index: src/utils/debugger/SkDrawCommand.cpp
diff --git a/src/utils/debugger/SkDrawCommand.cpp b/src/utils/debugger/SkDrawCommand.cpp
index 8be6de9b28e1dd9179fdc5aba19993bb92ecfa27..66f0c14f2d2ef66085bcc3d3b18ac4a05f0702c7 100644
--- a/src/utils/debugger/SkDrawCommand.cpp
+++ b/src/utils/debugger/SkDrawCommand.cpp
@@ -336,7 +336,8 @@ void SkDrawBitmapNineCommand::execute(SkCanvas* canvas) const {
 }
 
 bool SkDrawBitmapNineCommand::render(SkCanvas* canvas) const {
-    render_bitmap(canvas, fBitmap);
+    SkRect tmp = SkRect::Make(fCenter);
+    render_bitmap(canvas, fBitmap, &tmp);
     return true;
 }