Move more string_util functions to base namespace.

base/process/internal_linux.cc

Index: base/process/internal_linux.cc
diff --git a/base/process/internal_linux.cc b/base/process/internal_linux.cc
index d2e9ec52e5345b721391a4b302dcd23637cfc158..4f3fcaccbfb654821266c1bce7143870844e49d5 100644
--- a/base/process/internal_linux.cc
+++ b/base/process/internal_linux.cc
@@ -25,8 +25,8 @@ const char kProcDir[] = "/proc";
 
 const char kStatFile[] = "stat";
 
-base::FilePath GetProcPidDir(pid_t pid) {
-  return base::FilePath(kProcDir).Append(IntToString(pid));
+FilePath GetProcPidDir(pid_t pid) {
+  return FilePath(kProcDir).Append(IntToString(pid));
 }
 
 pid_t ProcDirSlotToPid(const char* d_name) {
@@ -106,7 +106,7 @@ bool ParseProcStats(const std::string& stats_data,
 
 typedef std::map<std::string, std::string> ProcStatMap;
 void ParseProcStat(const std::string& contents, ProcStatMap* output) {
-  base::StringPairs key_value_pairs;
+  StringPairs key_value_pairs;
   SplitStringIntoKeyValuePairs(contents, ' ', '\n', &key_value_pairs);
   for (size_t i = 0; i < key_value_pairs.size(); ++i) {
     output->insert(key_value_pairs[i]);