base: Move SplitString functions into the base namespace and update the callers.

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 1cb52d6b7ff19d5dc55d4dbaa47ac9c0920feebe..101cb5a65ffc5bf4b8c9dc7099455cbca0260094 100644
--- a/chrome/browser/safe_browsing/chunk_range.cc
+++ b/chrome/browser/safe_browsing/chunk_range.cc
@@ -78,11 +78,11 @@ 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;
-  SplitString(input, ',', &chunk_parts);
+  base::SplitString(input, ',', &chunk_parts);
 
   for (size_t i = 0; i < chunk_parts.size(); ++i) {
     std::vector<std::string> chunk_ranges;
-    SplitString(chunk_parts[i], '-', &chunk_ranges);
+    base::SplitString(chunk_parts[i], '-', &chunk_ranges);
     int start = atoi(chunk_ranges[0].c_str());
     int stop = start;
     if (chunk_ranges.size() == 2)