Update SplitString calls to new form

extensions/common/csp_validator.cc

 // Copyright 2013 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 "extensions/common/csp_validator.h"
 
 #include <vector>
 
 #include "base/strings/string_split.h"
 #include "base/strings/string_tokenizer.h"
@@ skipping 222 matching lines @@
 
   return policy.find_first_of(kBadChars, 0, arraysize(kBadChars)) ==
       std::string::npos;
 }
 
 std::string SanitizeContentSecurityPolicy(
     const std::string& policy,
     int options,
     std::vector<InstallWarning>* warnings) {
   // See http://www.w3.org/TR/CSP/#parse-a-csp-policy for parsing algorithm.
-  std::vector<std::string> directives;
-  base::SplitString(policy, ';', &directives);
+  std::vector<std::string> directives = base::SplitString(
+      policy, ";", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
 
   DirectiveStatus default_src_status(kDefaultSrc);
   DirectiveStatus script_src_status(kScriptSrc);
   DirectiveStatus object_src_status(kObjectSrc);
 
   bool allow_insecure_object_src =
       AllowedToHaveInsecureObjectSrc(options, directives);
 
   std::vector<std::string> sane_csp_parts;
   std::vector<InstallWarning> default_src_csp_warnings;
@@ skipping 45 matching lines @@
             manifest_errors::kInvalidCSPMissingSecureSrc, kObjectSrc)));
     }
   }
 
   return base::JoinString(sane_csp_parts, " ");
 }
 
 bool ContentSecurityPolicyIsSandboxed(
     const std::string& policy, Manifest::Type type) {
   // See http://www.w3.org/TR/CSP/#parse-a-csp-policy for parsing algorithm.
-  std::vector<std::string> directives;
-  base::SplitString(policy, ';', &directives);
-
   bool seen_sandbox = false;
-
-  for (size_t i = 0; i < directives.size(); ++i) {
-    std::string& input = directives[i];
+  for (const std::string& input : base::SplitString(
+           policy, ";", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
     base::StringTokenizer tokenizer(input, " \t\r\n");
     if (!tokenizer.GetNext())
       continue;
 
     std::string directive_name = tokenizer.token();
     base::StringToLowerASCII(&directive_name);
 
     if (directive_name != kSandboxDirectiveName)
       continue;
 
@@ skipping 14 matching lines @@
       }
     }
   }
 
   return seen_sandbox;
 }
 
 }  // namespace csp_validator
 
 }  // namespace extensions