From e59558b78e8c6a1b0bd916a724724b638c3c91b6 Mon Sep 17 00:00:00 2001 From: "dcheng@chromium.org" Date: Tue, 9 Apr 2013 05:45:17 +0000 Subject: Rewrite std::string("") to std::string(), Linux edition. This patch was generated by running the empty_string clang tool across the Chromium Linux compilation database. Implicitly or explicitly constructing std::string() with a "" argument is inefficient as the caller needs to emit extra instructions to pass an argument, and the constructor needlessly copies a byte into internal storage. Rewriting these instances to simply call the default constructor appears to save ~14-18 kilobytes on an optimized release build. BUG=none Review URL: https://codereview.chromium.org/13145003 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@193020 0039d316-1c4b-4281-b951-d872f2087c98 --- chrome/test/ui/ui_test.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'chrome/test/ui/ui_test.cc') diff --git a/chrome/test/ui/ui_test.cc b/chrome/test/ui/ui_test.cc index cf839fb..40bdf16 100644 --- a/chrome/test/ui/ui_test.cc +++ b/chrome/test/ui/ui_test.cc @@ -516,7 +516,7 @@ bool UITestBase::BeginTracing(const std::string& categories) { std::string UITestBase::EndTracing() { std::string json_trace_output; if (!automation()->EndTracing(&json_trace_output)) - return ""; + return std::string(); return json_trace_output; } -- cgit v1.1