[fuchsia] Remove logic from DCHECK condition.

This was causing the code to not be executed in non-dcheck builds.

Change-Id: Ib1257333ae0683c7b068e9837f7d1a5b36848628
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1861104
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Auto-Submit: Fabrice de Gans-Riberi <fdegans@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705822}

fuchsia/engine/browser/web_engine_devtools_controller.cc

@@ -282,7 +282,8 @@ WebEngineDevToolsController::CreateFromCommandLine(
 
     // The command-line option can only be provided by the ContextProvider
     // process, it should not fail to parse to an int.
-    DCHECK(base::StringToInt(command_line_port_value, &parsed_port));
+    bool parsed = base::StringToInt(command_line_port_value, &parsed_port);
+    DCHECK(parsed);
 
     if (parsed_port != 0 &&
         (!net::IsPortValid(parsed_port) || net::IsWellKnownPort(parsed_port))) {