DevTools: Don't show CSS variables in ComputedStyleWidget unless showing all

third_party/WebKit/LayoutTests/inspector/elements/styles-3/styles-variables-expected.txt

Index: third_party/WebKit/LayoutTests/inspector/elements/styles-3/styles-variables-expected.txt
diff --git a/third_party/WebKit/LayoutTests/inspector/elements/styles-3/styles-variables-expected.txt b/third_party/WebKit/LayoutTests/inspector/elements/styles-3/styles-variables-expected.txt
index 19d1d6935d9b07cd2f8f1a036fc3eb8845d92d9f..1f63c86f4dca8cd9b772a5d5f9cac9bdd87247e5 100644
--- a/third_party/WebKit/LayoutTests/inspector/elements/styles-3/styles-variables-expected.txt
+++ b/third_party/WebKit/LayoutTests/inspector/elements/styles-3/styles-variables-expected.txt
@@ -3,10 +3,6 @@ Tests that computed styles expand and allow tracing to style rules.
 ==== Computed style for ID1 ====
 display: block;
     block - div user agent stylesheet
---a:  red;
-    red - body styles-variables.html:4 -> styles-variables.html:4:7
---b:  44px;
-    44px - #id1 styles-variables.html:8 -> styles-variables.html:8:7
 [expanded] 
 element.style { ()
 
@@ -27,11 +23,6 @@ value of --a:  red
 ==== Computed style for ID2 ====
 display: block;
     block - div user agent stylesheet
---a:  green;
-    green - #id2 styles-variables.html:12 -> styles-variables.html:12:7
-    OVERLOADED red - body styles-variables.html:4 -> styles-variables.html:4:7
---b:  44px;
-    44px - #id1 styles-variables.html:8 -> styles-variables.html:8:7
 [expanded] 
 element.style { ()
 
@@ -57,12 +48,6 @@ value of --b:  44px
 ==== Computed style for ID3 ====
 display: block;
     block - div user agent stylesheet
---a:  green;
-    inherit - #id3 styles-variables.html:16 -> styles-variables.html:16:7
-    OVERLOADED green - #id2 styles-variables.html:12 -> styles-variables.html:12:7
-    OVERLOADED red - body styles-variables.html:4 -> styles-variables.html:4:7
---b:  44px;
-    44px - #id1 styles-variables.html:8 -> styles-variables.html:8:7
 [expanded] 
 element.style { ()