Don't apply overflow clips in paint invalidation.

third_party/WebKit/Source/core/layout/VisualRectMappingTest.cpp

 // Copyright 2015 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/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/PaintInvalidationState.h"
 #include "core/paint/PaintLayer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 405 matching lines @@
     LayoutRect targetOverflowRect = target->localOverflowRectForPaintInvalidation();
     // 140 = width(100) + box_shadow_offset_x(40)
     // 110 = height(90) + box_shadow_offset_y(20)
     EXPECT_EQ(LayoutRect(0, 0, 140, 110), targetOverflowRect);
     LayoutRect rect = targetOverflowRect;
     EXPECT_TRUE(target->mapToVisualRectInAncestorSpace(target, rect));
     EXPECT_EQ(LayoutRect(0, 0, 140, 110), rect);
 
     rect = targetOverflowRect;
     EXPECT_TRUE(target->mapToVisualRectInAncestorSpace(container, rect));
-    // Rect is clipped by container's overflow clip.
-    EXPECT_EQ(LayoutRect(10, 10, 50, 80), rect);
+    // Rect is not clipped by container's overflow clip.
+    EXPECT_EQ(LayoutRect(10, 10, 140, 110), rect);
 }
 
 TEST_F(VisualRectMappingTest, ContainerFlippedWritingModeAndOverflowHidden)
 {
     setBodyInnerHTML(
         "<div id='container' style='writing-mode: vertical-rl; position: absolute; top: 111px; left: 222px;"
         "    border: solid red; border-width: 10px 20px 30px 40px;"
         "    overflow: hidden; width: 50px; height: 80px'>"
         "    <div id='target' style='box-shadow: 40px 20px black; width: 100px; height: 90px'></div>"
         "    <div style='width: 100px; height: 100px'></div>"
@@ skipping 18 matching lines @@
     LayoutRect rect = targetOverflowRect;
     target->flipForWritingMode(rect);
     EXPECT_TRUE(target->mapToVisualRectInAncestorSpace(target, rect));
     // This rect is in physical coordinates of target.
     EXPECT_EQ(LayoutRect(0, 0, 140, 110), rect);
 
     rect = targetOverflowRect;
     target->flipForWritingMode(rect);
     EXPECT_TRUE(target->mapToVisualRectInAncestorSpace(container, rect));
     // 58 = target_physical_x(100) + container_border_left(40) - scroll_left(58)
-    // The other sides of the rect are clipped by container's overflow clip.
-    EXPECT_EQ(LayoutRect(58, 10, 32, 80), rect);
+    EXPECT_EQ(LayoutRect(-10, 10, 140, 110), rect);
 }
 
 TEST_F(VisualRectMappingTest, ContainerAndTargetDifferentFlippedWritingMode)
 {
     setBodyInnerHTML(
         "<div id='container' style='writing-mode: vertical-rl; position: absolute; top: 111px; left: 222px;"
         "    border: solid red; border-width: 10px 20px 30px 40px;"
         "    overflow: scroll; width: 50px; height: 80px'>"
         "    <div id='target' style='writing-mode: vertical-lr; box-shadow: 40px 20px black; width: 100px; height: 90px'></div>"
         "    <div style='width: 100px; height: 100px'></div>"
@@ skipping 130 matching lines @@
 
     LayoutRect targetOverflowRect = target->localOverflowRectForPaintInvalidation();
     EXPECT_EQ(LayoutRect(0, 0, 400, 400), targetOverflowRect);
     LayoutRect rect = targetOverflowRect;
     EXPECT_TRUE(target->mapToVisualRectInAncestorSpace(&layoutView(), rect));
     EXPECT_EQ(LayoutRect(0, 0, 200, 200), rect);
     checkPaintInvalidationStateRectMapping(rect, targetOverflowRect, *target, layoutView(), layoutView());
 }
 
 } // namespace blink