Fix testharness paths in imported/wpt/* except dom and html.

third_party/WebKit/LayoutTests/imported/wpt/webrtc/simplecall.html

Index: third_party/WebKit/LayoutTests/imported/wpt/webrtc/simplecall.html
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/webrtc/simplecall.html b/third_party/WebKit/LayoutTests/imported/wpt/webrtc/simplecall.html
index 24cc23c07e94219dbdc3803251a4c772d014472b..2b7aac5bdf8e4b5ab75b08fe7885d9ac1e470027 100644
--- a/third_party/WebKit/LayoutTests/imported/wpt/webrtc/simplecall.html
+++ b/third_party/WebKit/LayoutTests/imported/wpt/webrtc/simplecall.html
@@ -20,8 +20,8 @@ instance --use-fake-device-for-media-stream for Chrome.
   </div>
 
   <!--  These files are in place when executing on W3C.  -->
-  <script src="../../../resources/testharness.js"></script>
-  <script src="../../../resources/testharnessreport.js"></script>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
   <script src="../../../resources/vendor-prefix.js"
           data-prefixed-objects=
               '[{"ancestors":["navigator"], "name":"getUserMedia"}]'