Update reference builds to r197396.

chrome_linux64/resources/inspector/tabbedPane.css

Index: chrome_linux64/resources/inspector/tabbedPane.css
===================================================================
--- chrome_linux64/resources/inspector/tabbedPane.css	(revision 197568)
+++ chrome_linux64/resources/inspector/tabbedPane.css	(working copy)
@@ -83,46 +83,26 @@
     border-bottom: none;
 }
 
-.tabbed-pane-header-tab-close-button {
+.tabbed-pane-header-tab .close-button-gray {
     position: relative;
-    bottom: 0;
-    opacity: 0;
-    padding-left: 3px;
-    font-size: 14px;
-    color: rgb(80, 80, 80);
-    line-height: 12px;
+    top: 2px;
+    left: 1px;
+    margin-left: 2px;
+    margin-top: -3px;
+    visibility: hidden;
 }
 
-.tabbed-pane-header-tab:hover .tabbed-pane-header-tab-close-button {
-    opacity: 0.5;
+.tabbed-pane-header-tab:hover .close-button-gray,
+.tabbed-pane-header-tab.selected .close-button-gray {
+    visibility: visible;
 }
 
-.tabbed-pane-header-tab:hover .tabbed-pane-header-tab-close-button:hover {
-    opacity: 1.0;
-}
-
-.tabbed-pane-header-tab:hover .tabbed-pane-header-tab-close-button:active {
-    opacity: 0.7;
-}
-
-.tabbed-pane-header-tab.selected .tabbed-pane-header-tab-close-button {
-    opacity: 0.5;
-}
-
-.tabbed-pane-header-tab.selected .tabbed-pane-header-tab-close-button:hover {
-    opacity: 1.0;
-}
-
-.tabbed-pane-header-tab.selected .tabbed-pane-header-tab-close-button:active {
-    opacity: 0.7;
-}
-
 .tabbed-pane-header-tabs-drop-down-container {
     float: left;
     position: relative;
     font-size: 16px;
     vertical-align: bottom;
-    top: 3px;
+    top: 1px;
     padding-left: 3px;
 }