[Chromedriver] Update status to include invalid argument code

WIP needed for Actions API

Bug: 
Change-Id: Ia0e93cc3a7c67b7ae0d4792de60816d44c6867e2
Reviewed-on: https://chromium-review.googlesource.com/579868Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Jonathon Kereliuk <kereliuk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488664}

chrome/test/chromedriver/chrome/status.cc

@@ -30,6 +30,8 @@ const char* DefaultMessageForStatusCode(StatusCode code) {
       return "invalid element state";
     case kUnknownError:
       return "unknown error";
+    case kInvalidArgument:
+      return "invalid argument";
     case kJavaScriptError:
       return "javascript error";
     case kXPathLookupError:

chrome/test/chromedriver/chrome/status.h

@@ -18,6 +18,7 @@ enum StatusCode {
   kElementNotVisible = 11,
   kInvalidElementState = 12,
   kUnknownError = 13,
+  kInvalidArgument = 14,
   kJavaScriptError = 17,
   kXPathLookupError = 19,
   kTimeout = 21,

chrome/test/chromedriver/server/http_handler.cc

@@ -672,6 +672,7 @@ HttpHandler::PrepareStandardResponse(
     case kInvalidSelector:
     case kXPathLookupError:
     case kNoAlertOpen:
+    case kInvalidArgument:
     case kNoSuchExecutionContext:
       response.reset(new net::HttpServerResponseInfo(net::HTTP_BAD_REQUEST));
       break;