Move RemoveChars, ReplaceChars, TrimString, and TruncateUTF8ToByteSize to base namespace.

ui/base/accelerators/menu_label_accelerator_util_linux.cc

Index: ui/base/accelerators/menu_label_accelerator_util_linux.cc
diff --git a/ui/base/accelerators/menu_label_accelerator_util_linux.cc b/ui/base/accelerators/menu_label_accelerator_util_linux.cc
index 21697ea1d6f91678e8070aca6844209c22ff1f15..0a00f82e09476c0d5d49a1942f4873bce78653df 100644
--- a/ui/base/accelerators/menu_label_accelerator_util_linux.cc
+++ b/ui/base/accelerators/menu_label_accelerator_util_linux.cc
@@ -55,7 +55,7 @@ std::string RemoveWindowsStyleAccelerators(const std::string& label) {
 // underscores doubled, making the string that appears to the user just |x|.
 std::string EscapeWindowsStyleAccelerators(const std::string& label) {
   std::string ret;
-  ReplaceChars(label, "&", "&&", &ret);
+  base::ReplaceChars(label, "&", "&&", &ret);
   return ret;
 }