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

chrome/common/extensions/csp_validator_unittest.cc

Index: chrome/common/extensions/csp_validator_unittest.cc
diff --git a/chrome/common/extensions/csp_validator_unittest.cc b/chrome/common/extensions/csp_validator_unittest.cc
index e96c42da0d0efeedd2c0c8fd1d24a698ec67ba19..13cbfe80174feee164e09ecb903e32c1d621e626 100644
--- a/chrome/common/extensions/csp_validator_unittest.cc
+++ b/chrome/common/extensions/csp_validator_unittest.cc
@@ -23,10 +23,10 @@ TEST(ExtensionCSPValidator, IsLegal) {
 }
 
 TEST(ExtensionCSPValidator, IsSecure) {
-  EXPECT_FALSE(ContentSecurityPolicyIsSecure(
-      "", Manifest::TYPE_EXTENSION));
-  EXPECT_FALSE(ContentSecurityPolicyIsSecure(
-      "img-src https://google.com", Manifest::TYPE_EXTENSION));
+  EXPECT_FALSE(
+      ContentSecurityPolicyIsSecure(std::string(), Manifest::TYPE_EXTENSION));
+  EXPECT_FALSE(ContentSecurityPolicyIsSecure("img-src https://google.com",
+                                             Manifest::TYPE_EXTENSION));
 
   EXPECT_FALSE(ContentSecurityPolicyIsSecure(
       "default-src *", Manifest::TYPE_EXTENSION));
@@ -146,9 +146,10 @@ TEST(ExtensionCSPValidator, IsSecure) {
 }
 
 TEST(ExtensionCSPValidator, IsSandboxed) {
-  EXPECT_FALSE(ContentSecurityPolicyIsSandboxed("", Manifest::TYPE_EXTENSION));
-  EXPECT_FALSE(ContentSecurityPolicyIsSandboxed(
-      "img-src https://google.com", Manifest::TYPE_EXTENSION));
+  EXPECT_FALSE(ContentSecurityPolicyIsSandboxed(std::string(),
+                                                Manifest::TYPE_EXTENSION));
+  EXPECT_FALSE(ContentSecurityPolicyIsSandboxed("img-src https://google.com",
+                                                Manifest::TYPE_EXTENSION));
 
   // Sandbox directive is required.
   EXPECT_TRUE(ContentSecurityPolicyIsSandboxed(