Switch to standard integer types in chrome/browser/, part 4 of 4.

chrome/browser/sync_file_system/drive_backend/tracker_id_set.cc

Index: chrome/browser/sync_file_system/drive_backend/tracker_id_set.cc
diff --git a/chrome/browser/sync_file_system/drive_backend/tracker_id_set.cc b/chrome/browser/sync_file_system/drive_backend/tracker_id_set.cc
index 9fc4bbabb18645ed497236d94e93c4e648237e90..0bb272d6803a6733f0280e7156e8f9a5014a758b 100644
--- a/chrome/browser/sync_file_system/drive_backend/tracker_id_set.cc
+++ b/chrome/browser/sync_file_system/drive_backend/tracker_id_set.cc
@@ -22,7 +22,7 @@ void TrackerIDSet::Insert(const FileTracker& tracker) {
     InsertInactiveTracker(tracker.tracker_id());
 }
 
-void TrackerIDSet::InsertActiveTracker(int64 tracker_id) {
+void TrackerIDSet::InsertActiveTracker(int64_t tracker_id) {
   DCHECK(tracker_id);
   DCHECK(!active_tracker_);
 
@@ -30,14 +30,14 @@ void TrackerIDSet::InsertActiveTracker(int64 tracker_id) {
   tracker_ids_.insert(tracker_id);
 }
 
-void TrackerIDSet::InsertInactiveTracker(int64 tracker_id) {
+void TrackerIDSet::InsertInactiveTracker(int64_t tracker_id) {
   DCHECK(tracker_id);
   DCHECK_NE(active_tracker_, tracker_id);
 
   tracker_ids_.insert(tracker_id);
 }
 
-void TrackerIDSet::Erase(int64 tracker_id) {
+void TrackerIDSet::Erase(int64_t tracker_id) {
   DCHECK(ContainsKey(tracker_ids_, tracker_id));
 
   if (active_tracker_ == tracker_id)
@@ -45,13 +45,13 @@ void TrackerIDSet::Erase(int64 tracker_id) {
   tracker_ids_.erase(tracker_id);
 }
 
-void TrackerIDSet::Activate(int64 tracker_id) {
+void TrackerIDSet::Activate(int64_t tracker_id) {
   DCHECK(!active_tracker_);
   DCHECK(ContainsKey(tracker_ids_, tracker_id));
   active_tracker_ = tracker_id;
 }
 
-void TrackerIDSet::Deactivate(int64 tracker_id) {
+void TrackerIDSet::Deactivate(int64_t tracker_id) {
   DCHECK_EQ(active_tracker_, tracker_id);
   DCHECK(ContainsKey(tracker_ids_, tracker_id));
   active_tracker_ = 0;