Revert of Remove obsolete code that invalidates document element on LayoutView resize

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

Index: third_party/WebKit/Source/core/paint/BoxPaintInvalidatorTest.cpp
diff --git a/third_party/WebKit/Source/core/paint/BoxPaintInvalidatorTest.cpp b/third_party/WebKit/Source/core/paint/BoxPaintInvalidatorTest.cpp
index 975a31a4deea2ee16052814e6be63c7ce72bfd62..d4f4992456ebac2af04b2e2100615940021a59bb 100644
--- a/third_party/WebKit/Source/core/paint/BoxPaintInvalidatorTest.cpp
+++ b/third_party/WebKit/Source/core/paint/BoxPaintInvalidatorTest.cpp
@@ -238,14 +238,22 @@ TEST_P(BoxPaintInvalidatorTest, CompositedLayoutViewResize) {
     // is clipped.
     // TODO(skobes): Treat LayoutView in the same way as normal objects having
     // background-attachment: local. crbug.com/568847.
-    EXPECT_FALSE(layoutView()
-                     .layer()
-                     ->graphicsLayerBacking()
-                     ->getRasterInvalidationTracking());
+    // TODO(wangxianzhu): Temporary for crbug.com/680745.
+    // EXPECT_FALSE(layoutView()
+    //                  .layer()
+    //                  ->graphicsLayerBacking()
+    //                  ->getRasterInvalidationTracking());
+    EXPECT_EQ(1u, layoutView()
+                      .layer()
+                      ->graphicsLayerBacking()
+                      ->getRasterInvalidationTracking()
+                      ->trackedRasterInvalidations.size());
   } else {
     const auto& rasterInvalidations =
         getRasterInvalidationTracking()->trackedRasterInvalidations;
-    ASSERT_EQ(1u, rasterInvalidations.size());
+    // TODO(wangxianzhu): Temporary for crbug.com/680745.
+    // ASSERT_EQ(1u, rasterInvalidations.size());
+    ASSERT_EQ(2u, rasterInvalidations.size());
     EXPECT_EQ(IntRect(0, 2000, 800, 1000), rasterInvalidations[0].rect);
     EXPECT_EQ(static_cast<const DisplayItemClient*>(&layoutView()),
               rasterInvalidations[0].client);
@@ -292,7 +300,9 @@ TEST_P(BoxPaintInvalidatorTest, CompositedLayoutViewGradientResize) {
   } else {
     const auto& rasterInvalidations =
         getRasterInvalidationTracking()->trackedRasterInvalidations;
-    ASSERT_EQ(1u, rasterInvalidations.size());
+    // TODO(wangxianzhu): Temporary for crbug.com/680745.
+    // ASSERT_EQ(1u, rasterInvalidations.size());
+    ASSERT_EQ(2u, rasterInvalidations.size());
     EXPECT_EQ(IntRect(0, 0, 800, 3000), rasterInvalidations[0].rect);
     EXPECT_EQ(static_cast<const DisplayItemClient*>(&layoutView()),
               rasterInvalidations[0].client);
@@ -333,7 +343,10 @@ TEST_P(BoxPaintInvalidatorTest, NonCompositedLayoutViewResize) {
   content->setAttribute(HTMLNames::styleAttr, "height: 500px");
   document().view()->updateAllLifecyclePhases();
   // No invalidation because the changed part of layout overflow is clipped.
-  EXPECT_FALSE(getRasterInvalidationTracking());
+  // TODO(wangxianzhu): Temporary for crbug.com/680745.
+  // EXPECT_FALSE(getRasterInvalidationTracking());
+  EXPECT_EQ(1u,
+            getRasterInvalidationTracking()->trackedRasterInvalidations.size());
   document().view()->setTracksPaintInvalidations(false);
 
   // Resize the iframe.
@@ -392,7 +405,9 @@ TEST_P(BoxPaintInvalidatorTest, NonCompositedLayoutViewGradientResize) {
   document().view()->updateAllLifecyclePhases();
   const auto* rasterInvalidations =
       &getRasterInvalidationTracking()->trackedRasterInvalidations;
-  ASSERT_EQ(1u, rasterInvalidations->size());
+  // TODO(wangxianzhu): Temporary for crbug.com/680745.
+  // ASSERT_EQ(1u, rasterInvalidations->size());
+  ASSERT_EQ(2u, rasterInvalidations->size());
   EXPECT_EQ(IntRect(0, 0, 100, 100), (*rasterInvalidations)[0].rect);
   EXPECT_EQ(static_cast<const DisplayItemClient*>(frameLayoutView),
             (*rasterInvalidations)[0].client);