DevTools: revert back ComputedStylesSidebar

LayoutTests/inspector/elements/styles-2/lazy-computed-style-expected.txt

Index: LayoutTests/inspector/elements/styles-2/lazy-computed-style-expected.txt
diff --git a/LayoutTests/inspector/elements/styles-2/lazy-computed-style-expected.txt b/LayoutTests/inspector/elements/styles-2/lazy-computed-style-expected.txt
index 7cfc30a02383acbf2cb256e54d8b4678b1d8636a..2e976da16d889758fc674a84124e6a757377920d 100644
--- a/LayoutTests/inspector/elements/styles-2/lazy-computed-style-expected.txt
+++ b/LayoutTests/inspector/elements/styles-2/lazy-computed-style-expected.txt
@@ -34,13 +34,24 @@ div  { (user agent stylesheet)
 
 ==== All styles (computed should be there) ====
 background-attachment: scroll;
+    initial - #inspected lazy-computed-style.html:15 -> lazy-computed-style.html:15:1
 background-clip: border-box;
+    initial - #inspected lazy-computed-style.html:15 -> lazy-computed-style.html:15:1
 background-color: rgb(128, 128, 128);
+    gray - #inspected lazy-computed-style.html:15 -> lazy-computed-style.html:15:1
+    OVERLOADED black - #inspected lazy-computed-style.html:10 -> lazy-computed-style.html:10:1
+    OVERLOADED green - #inspected lazy-computed-style.html:5 -> lazy-computed-style.html:5:1
 background-image: none;
+    initial - #inspected lazy-computed-style.html:15 -> lazy-computed-style.html:15:1
 background-origin: padding-box;
+    initial - #inspected lazy-computed-style.html:15 -> lazy-computed-style.html:15:1
 background-size: auto;
+    initial - #inspected lazy-computed-style.html:15 -> lazy-computed-style.html:15:1
 display: block;
+    block - user agent stylesheetdiv user agent stylesheet
 font-family: Courier;
+    Courier - #inspected lazy-computed-style.html:10 -> lazy-computed-style.html:10:1
+    OVERLOADED Times - #inspected lazy-computed-style.html:5 -> lazy-computed-style.html:5:1
 [expanded] 
 element.style  { ()