Update SplitString calls to new form

extensions/common/url_pattern.cc

Index: extensions/common/url_pattern.cc
diff --git a/extensions/common/url_pattern.cc b/extensions/common/url_pattern.cc
index 502c459d43353ac94c3443d9a7d6d724e53074ea..b91d4383704388b8f1affad2073ddd856de01eb9 100644
--- a/extensions/common/url_pattern.cc
+++ b/extensions/common/url_pattern.cc
@@ -237,11 +237,12 @@ URLPattern::ParseResult URLPattern::Parse(const std::string& pattern) {
     host_ = pattern.substr(host_start_pos, host_end_pos - host_start_pos);
 
     // The first component can optionally be '*' to match all subdomains.
-    std::vector<std::string> host_components;
-    base::SplitString(host_, '.', &host_components);
+    std::vector<std::string> host_components = base::SplitString(
+        host_, ".", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
 
     // Could be empty if the host only consists of whitespace characters.
-    if (host_components.empty())
+    if (host_components.empty() ||
+        (host_components.size() == 1 && host_components[0].empty()))
       return PARSE_ERROR_EMPTY_HOST;
 
     if (host_components[0] == "*") {