Remove force-update when visual rects change.

third_party/WebKit/LayoutTests/paint/invalidation/clip-unclip-and-change.html

Index: third_party/WebKit/LayoutTests/paint/invalidation/clip-unclip-and-change.html
diff --git a/third_party/WebKit/LayoutTests/paint/invalidation/clip-unclip-and-change.html b/third_party/WebKit/LayoutTests/paint/invalidation/clip-unclip-and-change.html
index 12d067289c16508c1c60fe85cb6b5ab3cd2eb5ba..ffd2e5bfc1c25a1fd39a8eaa68b5f43d4333092e 100644
--- a/third_party/WebKit/LayoutTests/paint/invalidation/clip-unclip-and-change.html
+++ b/third_party/WebKit/LayoutTests/paint/invalidation/clip-unclip-and-change.html
@@ -16,7 +16,10 @@ onload = function() {
 Tests paint invalidation of previous location of an element which was clipped to be invisible initially, becme visible because of clip change, then changed color and size. Passes if there is a green square.
 <div id="container" style="position: absolute; top: 100px; width: 100px; height: 10px; overflow: hidden">
   <div style="height: 20px"></div>
-  <div style="width: 100px; height: 300px">
-    <div id="content" style="width: 100px; height: 300px; background-color: red"></div>
+  <!-- These two levels of divs are to isolate layout when container resizes. -->
+  <div style="width: 100px; height: 300px; overflow: hidden">

[chrishtr, 2017/02/28 22:45:28]

Add a new test rather than modifying the existing one?

[Xianzhu, 2017/03/01 00:03:33]

The original test has been unable to test its original intent, perhaps since
some change in layout code (which seems to layout one level more than before).
This change is needed to make the test work.

[chrishtr, 2017/03/01 00:51:58]

Ok.

+    <div style="width: 100px; height: 300px; overflow: hidden">
+      <div id="content" style="width: 100px; height: 300px; background-color: red"></div>
+    </div>
   </div>
 </div>