DevTools: Add CSSShadowModel and CSSLength

third_party/WebKit/Source/devtools/front_end/ui/UIUtils.js

Index: third_party/WebKit/Source/devtools/front_end/ui/UIUtils.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/UIUtils.js b/third_party/WebKit/Source/devtools/front_end/ui/UIUtils.js
index 86f9ab857020a1087ab8763a849465b34a8a33c3..41a65325c3a46fecba98ec7aa82db9c557a82643 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/UIUtils.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/UIUtils.js
@@ -357,11 +357,8 @@ WebInspector.markBeingEdited = function(element, value)
     return true;
 }
 
-WebInspector.CSSNumberRegex = /^(-?(?:\d+(?:\.\d+)?|\.\d+))$/;
-
 WebInspector.StyleValueDelimiters = " \xA0\t\n\"':;,/()";
 
-
 /**
  * @param {!Event} event
  * @return {?string}
@@ -466,7 +463,7 @@ WebInspector._modifiedFloatNumber = function(number, event)
     // Make the new number and constrain it to a precision of 6, this matches numbers the engine returns.
     // Use the Number constructor to forget the fixed precision, so 1.100000 will print as 1.1.
     var result = Number((number + delta).toFixed(6));
-    if (!String(result).match(WebInspector.CSSNumberRegex))
+    if (!String(result).match(new RegExp("^(" + WebInspector.CSSNumberRegex.source + ")$")))
         return null;
 
     return result;