Drop assert for degenerate cases in FloatRoundedRect::radiusCenterRect()

Source/platform/geometry/FloatRoundedRectTest.cpp

 /*
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 178 matching lines @@
     TEST_INTERCEPTS(r, 85, 0, 97.320511);
     TEST_INTERCEPTS(r, 95, 6.3661003, 91.05542);
 
     float minXIntercept;
     float maxXIntercept;
 
     EXPECT_FALSE(r.xInterceptsAtY(-1, minXIntercept, maxXIntercept));
     EXPECT_FALSE(r.xInterceptsAtY(101, minXIntercept, maxXIntercept));
 }
 
+TEST(FloatRoundedRectTest, radiusCenterRect)
+{
+    FloatSize cornerRect(10, 10);
+    FloatRoundedRect r0(FloatRect(0, 0, 100, 50), FloatRoundedRect::Radii(cornerRect, cornerRect, cornerRect, cornerRect));
+    EXPECT_EQ(FloatRect(10, 10, 80, 30), r0.radiusCenterRect());
+
+    // "Degenerate" cases all return an empty rectangle.
+    FloatRect collapsedRect(0, 0, 100, 50);
+    collapsedRect.expand(FloatRectOutsets(-200, -200, -200, -200));
+    FloatRoundedRect r1(collapsedRect);
+    EXPECT_TRUE(r1.radiusCenterRect().isEmpty());
+
+    FloatRoundedRect::Radii radiiWithTooLargeCorner(FloatSize(55, 55), FloatSize(), FloatSize(), FloatSize());
+    FloatRoundedRect r2(FloatRect(0, 0, 100, 50), radiiWithTooLargeCorner);
+    EXPECT_TRUE(r2.radiusCenterRect().isEmpty());
+}
+
 } // namespace