DevTools: follow up to r548569, complete the tethering transition.

Bug: 837446
Change-Id: I8e2d61e50fe9bf800a1577642a458791fb777057
Reviewed-on: https://chromium-review.googlesource.com/1048401Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Pavel Feldman <pfeldman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557242}

chrome/browser/devtools/device/port_forwarding_controller.cc

@@ -50,9 +50,9 @@ const char kIdParam[] = "id";
 const char kMethodParam[] = "method";
 const char kParamsParam[] = "params";
 
-const char kBindMethod[] = "bind";
-const char kUnbindMethod[] = "unbind";
-const char kAcceptedEvent[] = "accepted";
+const char kBindMethod[] = "Tethering.bind";
+const char kUnbindMethod[] = "Tethering.unbind";
+const char kAcceptedEvent[] = "Tethering.accepted";
 const char kPortParam[] = "port";
 const char kConnectionIdParam[] = "connectionId";