Rewrite std::string("") to std::string(), Linux edition.

chrome/common/content_settings_pattern_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/content_settings_pattern.h"
 
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
@@ skipping 402 matching lines @@
   EXPECT_STREQ("file:///tmp/test.html",
                Pattern("file:///tmp/bar/../test.html").ToString().c_str());
 }
 
 TEST(ContentSettingsPatternTest, InvalidPatterns) {
   // StubObserver expects an empty pattern top be returned as empty string.
   EXPECT_FALSE(ContentSettingsPattern().IsValid());
   EXPECT_STREQ("", ContentSettingsPattern().ToString().c_str());
 
   // Empty pattern string
-  EXPECT_FALSE(Pattern("").IsValid());
-  EXPECT_STREQ("", Pattern("").ToString().c_str());
+  EXPECT_FALSE(Pattern(std::string()).IsValid());
+  EXPECT_STREQ("", Pattern(std::string()).ToString().c_str());
 
   // Pattern strings with invalid scheme part.
   EXPECT_FALSE(Pattern("ftp://myhost.org").IsValid());
   EXPECT_STREQ("", Pattern("ftp://myhost.org").ToString().c_str());
 
   // Pattern strings with invalid host part.
   EXPECT_FALSE(Pattern("*example.com").IsValid());
   EXPECT_STREQ("", Pattern("*example.com").ToString().c_str());
   EXPECT_FALSE(Pattern("example.*").IsValid());
   EXPECT_STREQ("", Pattern("example.*").ToString().c_str());
@@ skipping 188 matching lines @@
 
   EXPECT_TRUE(Pattern("[*.]example.com").Matches(
               GURL("http://example.com/")));
   EXPECT_TRUE(Pattern("[*.]example.com").Matches(
               GURL("http://www.example.com/")));
   EXPECT_TRUE(Pattern("www.example.com").Matches(
               GURL("http://www.example.com/")));
   EXPECT_TRUE(
       Pattern("file:///tmp/test.html").Matches(
               GURL("file:///tmp/test.html")));
-  EXPECT_FALSE(Pattern("").Matches(
-               GURL("http://www.example.com/")));
+  EXPECT_FALSE(Pattern(std::string()).Matches(GURL("http://www.example.com/")));
   EXPECT_FALSE(Pattern("[*.]example.com").Matches(
                GURL("http://example.org/")));
   EXPECT_FALSE(Pattern("example.com").Matches(
                GURL("http://example.org/")));
   EXPECT_FALSE(
       Pattern("file:///tmp/test.html").Matches(
                GURL("file:///tmp/other.html")));
   EXPECT_FALSE(
       Pattern("file:///tmp/test.html").Matches(
                GURL("http://example.org/")));
@@ skipping 19 matching lines @@
   // file:/// normalization.
   EXPECT_STREQ("file:///tmp/test.html",
                Pattern("file:///tmp/bar/../test.html").ToString().c_str());
 
   // Invalid patterns.
   EXPECT_STREQ("", Pattern("*example.com").ToString().c_str());
   EXPECT_STREQ("", Pattern("example.*").ToString().c_str());
   EXPECT_STREQ("", Pattern("*\xC4\x87ira.com").ToString().c_str());
   EXPECT_STREQ("", Pattern("\xC4\x87ira.*").ToString().c_str());
 }