DevTools: jump from computed style to styles sidebar pane.

third_party/WebKit/Source/devtools/front_end/elements/computedStyleSidebarPane.css

Index: third_party/WebKit/Source/devtools/front_end/elements/computedStyleSidebarPane.css
diff --git a/third_party/WebKit/Source/devtools/front_end/elements/computedStyleSidebarPane.css b/third_party/WebKit/Source/devtools/front_end/elements/computedStyleSidebarPane.css
index becf8327ee748262f63e3b931a28be27a80f4f43..84a06ad2bb3ddb5c93c4944221a13910304637e0 100644
--- a/third_party/WebKit/Source/devtools/front_end/elements/computedStyleSidebarPane.css
+++ b/third_party/WebKit/Source/devtools/front_end/elements/computedStyleSidebarPane.css
@@ -21,6 +21,28 @@
 
 .computed-style-property .property-value {
     min-width: 5em;
+    position: relative;
+}
+
+.tree-outline li:hover .goto-source-icon {
+    display: block;
+}
+
+.goto-source-icon {
+    -webkit-mask-image: url(Images/toolbarButtonGlyphs.png);
+    -webkit-mask-position: 0 -120px;
+    background-color: #5a5a5a;
+    width: 28px;
+    height: 24px;
+    display: none;
+    position: absolute;
+    top: -6px;
+    left: -27px;
+    transform: scale(0.8);
+}
+
+.goto-source-icon:hover {
+    background-color: #333;
 }
 
 .computed-style-property-inherited {
@@ -53,6 +75,7 @@
 .property-trace-value {
     position: relative;
     display: inline-block;
+    margin-left: 2em;
 }
 
 .property-trace-inactive .property-trace-value::before {