servo: Upgrade ipc-channel, and make the timeout value in WPT match that of

Gecko in debug mode.

One WPT test is still too slow. No reasonable timeout value made it fast
enough. Therefore, I have marked the test as a timeout. Optimizing during WPT
running or landing rust-lang/cargo#1826 would fix this as well, I suspect.

Author: pcwalton

components/servo/Cargo.lock

@@ -34,6 +34,10 @@ def executor_kwargs(test_type, server_config, cache_manager, run_info_data,
     rv = base_executor_kwargs(test_type, server_config,
                               cache_manager, **kwargs)
     rv["pause_after_test"] = kwargs["pause_after_test"]
+    # Currently we always run Servo in debug mode. Like Firefox and B2G, we increase the timeout
+    # threefold in order to compensate for that.
+    if kwargs["timeout_multiplier"] is None:
+        rv["timeout_multiplier"] = 3
     return rv
 
 def env_options():

ports/cef/Cargo.lock

@@ -1,5 +1,6 @@
 [Range-mutations.html]
   type: testharness
+  expected: TIMEOUT
   [paras[0\].firstChild.splitText(376), with selected range on paras[0\].firstChild from 0 to 1]
     expected: FAIL