Don't include descendants into LocalVisualRect if a box has both mask and overflow clip

third_party/WebKit/Source/core/layout/LayoutBoxTest.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/layout/LayoutBox.h"
 
 #include "core/html/HTMLElement.h"
 #include "core/layout/ImageQualityController.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 214 matching lines @@
   EXPECT_TRUE(target->HasControlClip());
   EXPECT_TRUE(target->HasClipRelatedProperty());
   EXPECT_TRUE(target->ShouldClipOverflow());
 #if OS(MACOSX)
   EXPECT_EQ(LayoutRect(0, 0, 100, 18), target->ClippingRect());
 #else
   EXPECT_EQ(LayoutRect(2, 2, 96, 46), target->ClippingRect());
 #endif
 }
 
+TEST_F(LayoutBoxTest, LocalVisualRectWithMask) {
+  if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+    return;
+
+  SetBodyInnerHTML(
+      "<div id='target' style='-webkit-mask-image: url(#a);"
+      "     width: 100px; height: 100px; background: blue'>"
+      "  <div style='width: 300px; height: 10px; background: green'></div>"
+      "</div>");
+
+  LayoutBox* target = ToLayoutBox(GetLayoutObjectByElementId("target"));
+  EXPECT_TRUE(target->HasMask());
+  EXPECT_EQ(LayoutRect(0, 0, 300, 100), target->LocalVisualRect());
+}
+
+TEST_F(LayoutBoxTest, LocalVisualRectWithMaskAndOverflowClip) {
+  if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+    return;
+
+  SetBodyInnerHTML(
+      "<div id='target' style='-webkit-mask-image: url(#a); overflow: hidden;"
+      "     width: 100px; height: 100px; background: blue'>"
+      "  <div style='width: 300px; height: 10px; background: green'></div>"
+      "</div>");
+
+  LayoutBox* target = ToLayoutBox(GetLayoutObjectByElementId("target"));
+  EXPECT_TRUE(target->HasMask());
+  EXPECT_TRUE(target->HasOverflowClip());
+  EXPECT_EQ(LayoutRect(0, 0, 100, 100), target->LocalVisualRect());
+}
+
 }  // namespace blink