DevTools: propagate experiments that are enabled by default into default.

Source/devtools/front_end/ui/Tooltip.js

Index: Source/devtools/front_end/ui/Tooltip.js
diff --git a/Source/devtools/front_end/ui/Tooltip.js b/Source/devtools/front_end/ui/Tooltip.js
index 51322c3d91f7cee7f35db8632f3921f9eeca20b0..a0bc70ea02a32eb9d0c412bda9557773d5ca563f 100644
--- a/Source/devtools/front_end/ui/Tooltip.js
+++ b/Source/devtools/front_end/ui/Tooltip.js
@@ -132,12 +132,7 @@ WebInspector.Tooltip.installHandler = function(doc)
  */
 WebInspector.Tooltip.install = function(element, tooltipContent, actionId)
 {
-    if (Runtime.experiments.isEnabled("tooltips") && typeof tooltipContent === "string" && tooltipContent === "")
+    if (typeof tooltipContent === "string" && tooltipContent === "")
         return;
-    if (Runtime.experiments.isEnabled("tooltips"))
-        element[WebInspector.Tooltip._symbol] =  { content: tooltipContent, actionId: actionId };
-    else if (typeof tooltipContent === "string")
-        element.title = tooltipContent;
-    else
-        console.assert("Cannot set an element without custom tooltips enabled");
+    element[WebInspector.Tooltip._symbol] =  { content: tooltipContent, actionId: actionId };
 }