Update SplitString calls in chrome.

chrome/browser/safe_browsing/chunk_range.cc

Index: chrome/browser/safe_browsing/chunk_range.cc
diff --git a/chrome/browser/safe_browsing/chunk_range.cc b/chrome/browser/safe_browsing/chunk_range.cc
index 6e5c3f88d8be3bee44fdd39c297b69e4273f0de1..024aa9b3c8b786dc70016d38f0470e36038f0424 100644
--- a/chrome/browser/safe_browsing/chunk_range.cc
+++ b/chrome/browser/safe_browsing/chunk_range.cc
@@ -69,12 +69,10 @@ bool StringToRanges(const std::string& input,
 
   // Crack the string into chunk parts, then crack each part looking for a
   // range.
-  std::vector<std::string> chunk_parts;
-  base::SplitString(input, ',', &chunk_parts);
-
-  for (size_t i = 0; i < chunk_parts.size(); ++i) {
-    std::vector<std::string> chunk_ranges;
-    base::SplitString(chunk_parts[i], '-', &chunk_ranges);
+  for (const base::StringPiece& chunk : base::SplitStringPiece(
+           input, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
+    std::vector<std::string> chunk_ranges = base::SplitString(
+        chunk, "-", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
     int start = atoi(chunk_ranges[0].c_str());
     int stop = start;
     if (chunk_ranges.size() == 2)