Add unittests for the bugs found in previous CL.

third_party/WebKit/Source/platform/testing/PictureMatchers.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/testing/PictureMatchers.h"
 
 #include "platform/geometry/FloatQuad.h"
 #include "platform/geometry/FloatRect.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPicture.h"
@@ skipping 104 matching lines @@
     picture.playback(&canvas);
     const auto& quads = canvas.quadsWithColor();
     if (quads.size() != m_rectsWithColor.size()) {
       *listener << "which draws " << quads.size() << " quads";
       return false;
     }
 
     for (unsigned index = 0; index < quads.size(); index++) {
       const auto& quadWithColor = quads[index];
       const auto& rectWithColor = m_rectsWithColor[index];
-      if (!quadWithColor.quad.isRectilinear()) {
-        if (listener->IsInterested()) {
-          *listener << "at index " << index << " which draws ";
-          PrintTo(quadWithColor.quad, listener->stream());
-          *listener << " with color "
-                    << quadWithColor.color.serialized().ascii().data() << "\n";
-        }
-        return false;
-      }
 
       const FloatRect& rect = quadWithColor.quad.boundingBox();
-      if (rect != rectWithColor.rect ||
+      if (enclosingIntRect(rect) != enclosingIntRect(rectWithColor.rect) ||
           quadWithColor.color != rectWithColor.color) {
         if (listener->IsInterested()) {
           *listener << "at index " << index << " which draws ";
           PrintTo(rect, listener->stream());
           *listener << " with color "
                     << quadWithColor.color.serialized().ascii().data() << "\n";
         }
         return false;
       }
     }
@@ skipping 24 matching lines @@
   rectsWithColor.push_back(RectWithColor(rect, color));
   return ::testing::MakeMatcher(new DrawsRectanglesMatcher(rectsWithColor));
 }
 
 ::testing::Matcher<const SkPicture&> drawsRectangles(
     const Vector<RectWithColor>& rectsWithColor) {
   return ::testing::MakeMatcher(new DrawsRectanglesMatcher(rectsWithColor));
 }
 
 }  // namespace blink