Introducing a net::GenerateMimeMultipartBoundary helper.

components/search_engines/template_url.cc

Index: components/search_engines/template_url.cc
diff --git a/components/search_engines/template_url.cc b/components/search_engines/template_url.cc
index a75779bfb0d1cfe09f393076650d7671f5e13ca3..dcf45f89d6f174f9a5e8d26a23926452ba58f657 100644
--- a/components/search_engines/template_url.cc
+++ b/components/search_engines/template_url.cc
@@ -14,7 +14,6 @@
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/metrics/field_trial.h"
-#include "base/rand_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_split.h"
@@ -277,12 +276,9 @@ bool TemplateURLRef::EncodeFormData(const PostParams& post_params,
     return false;
 
   const char kUploadDataMIMEType[] = "multipart/form-data; boundary=";
-  const char kMultipartBoundary[] = "----+*+----%016" PRIx64 "----+*+----";
   // Each name/value pair is stored in a body part which is preceded by a
-  // boundary delimiter line. Uses random number generator here to create
-  // a unique boundary delimiter for form data encoding.
-  std::string boundary = base::StringPrintf(kMultipartBoundary,
-                                            base::RandUint64());
+  // boundary delimiter line.
+  std::string boundary = net::GenerateMimeMultipartBoundary();
   // Sets the content MIME type.
   post_content->first = kUploadDataMIMEType;
   post_content->first += boundary;