Use enclosingIntRect for the cull rect of DrawingDisplayItems.

third_party/WebKit/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp

 // Copyright 2014 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 "core/paint/LayoutObjectDrawingRecorder.h"
 
 #include "core/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutView.h"
 #include "core/paint/PaintControllerPaintTest.h"
 #include "core/paint/PaintLayer.h"
@@ skipping 94 matching lines @@
 TEST_F(LayoutObjectDrawingRecorderTest, CullRectMatchesProvidedClip)
 {
     // It's safe for the picture's cull rect to be expanded (though doing so
     // excessively may harm performance), but it cannot be contracted.
     // For now, this test expects the two rects to match completely.
     //
     // This rect is chosen so that in the x direction, pixel snapping rounds in
     // the opposite direction to enclosing, and in the y direction, the edges
     // are exactly on a half-pixel boundary. The numbers chosen map nicely to
     // both float and LayoutUnit, to make equality checking reliable.
+    //
+    // The final cull rect should be the enclosing int rect of this rect.
     FloatRect rect(20.75, -5.5, 5.375, 10);
-    EXPECT_EQ(rect, drawAndGetCullRect(rootPaintController(), layoutView(), rect));
-    EXPECT_EQ(rect, drawAndGetCullRect(rootPaintController(), layoutView(), LayoutRect(rect)));
+    EXPECT_EQ(enclosingIntRect(rect), drawAndGetCullRect(rootPaintController(), layoutView(), rect));
+    EXPECT_EQ(enclosingIntRect(rect), drawAndGetCullRect(rootPaintController(), layoutView(), LayoutRect(rect)));
 }
 
 #if 0 // TODO(wangxianzhu): Rewrite this test for slimmingPaintInvalidation.
 TEST_F(LayoutObjectDrawingRecorderTest, PaintOffsetCache)
 {
     RuntimeEnabledFeatures::setSlimmingPaintOffsetCachingEnabled(true);
 
     GraphicsContext context(rootPaintController());
     LayoutRect bounds = layoutView().viewRect();
     LayoutPoint paintOffset(1, 2);
@@ skipping 31 matching lines @@
     // Ensure the new paint offset can be used.
     EXPECT_TRUE(LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, layoutView(), PaintPhaseForeground));
     rootPaintController().commitNewDisplayItems();
     EXPECT_DISPLAY_LIST(rootPaintController().getDisplayItemList(), 1,
         TestDisplayItem(layoutView(), DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground)));
 }
 #endif
 
 } // namespace
 } // namespace blink