Fix presubmit checks after r11223

src/profile-generator.cc

Index: src/profile-generator.cc
===================================================================
--- src/profile-generator.cc	(revision 11223)
+++ src/profile-generator.cc	(working copy)
@@ -3510,7 +3510,7 @@
 
 // This function won't work correctly for MIN_INT but this is not
 // a problem in case of heap snapshots serialization.
-static int itoa(int value, Vector<char>& buffer, int buffer_pos) {
+static int itoa(int value, const Vector<char>& buffer, int buffer_pos) {
   if (value < 0) {
     buffer[buffer_pos++] = '-';
     value = -value;