[chromedriver] Remove extra call to HttpServer::Close() and increase TestHttpServer buffer limit

chrome/test/chromedriver/server/chromedriver_server.cc

Index: chrome/test/chromedriver/server/chromedriver_server.cc
diff --git a/chrome/test/chromedriver/server/chromedriver_server.cc b/chrome/test/chromedriver/server/chromedriver_server.cc
index 2508c59ae50a5e8015c777816844b6f586630b70..f06a7fc9c34be71c7626943dbb21534eac2ecc50 100644
--- a/chrome/test/chromedriver/server/chromedriver_server.cc
+++ b/chrome/test/chromedriver/server/chromedriver_server.cc
@@ -87,7 +87,8 @@ class HttpServer : public net::HttpServer::Delegate {
     // the connection to close (e.g., python 2.7 urllib).
     response->AddHeader("Connection", "close");
     server_->SendResponse(connection_id, *response);
-    server_->Close(connection_id);
+    // Don't need to call server_->Close(), since SendResponse() will handle
+    // this for us.
   }
 
   HttpRequestHandlerFunc handle_request_func_;