increase gm offsetimagefilter stroke width

gm/offsetimagefilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "sk_tool_utils.h"
 #include "SkBitmapSource.h"
 #include "SkOffsetImageFilter.h"
@@ skipping 39 matching lines @@
         canvas->scale(scale, scale);
         canvas->drawBitmap(bitmap, 0, 0, &paint);
         canvas->restore();
 
         // Draw a boundary rect around the intersection of the clip rect and crop rect.
         SkRect cropRectFloat;
         SkMatrix::MakeScale(scale, scale).mapRect(&cropRectFloat, SkRect::Make(cropRect));
         if (clipRect.intersect(cropRectFloat)) {
             SkPaint strokePaint;
             strokePaint.setStyle(SkPaint::kStroke_Style);
+            strokePaint.setStrokeWidth(2);
             strokePaint.setColor(SK_ColorRED);
             canvas->drawRect(clipRect, strokePaint);
         }
     }
 
     void onOnceBeforeDraw() override {
         make_bitmap();
         
         fCheckerboard.allocN32Pixels(80, 80);
         SkCanvas checkerboardCanvas(fCheckerboard);
@@ skipping 135 matching lines @@
 
         // crop==clip==dst
         canvas->translate(100, 0);
         this->doDraw(canvas, r, SkOffsetImageFilter::Create(40, 0, NULL, &cr2), &r2);
     }
 
 private:
     typedef skiagm::GM INHERITED;
 };
 DEF_GM( return new SimpleOffsetImageFilterGM; )