[SyncFS] Expose constants in SyncProcessRunner

chrome/browser/sync_file_system/sync_process_runner.h

Index: chrome/browser/sync_file_system/sync_process_runner.h
diff --git a/chrome/browser/sync_file_system/sync_process_runner.h b/chrome/browser/sync_file_system/sync_process_runner.h
index 13c4bd163c463988070c4e59aab052bd1cf81f92..bd4b2f8496513ed594c99924cca61cef8a80179e 100644
--- a/chrome/browser/sync_file_system/sync_process_runner.h
+++ b/chrome/browser/sync_file_system/sync_process_runner.h
@@ -25,6 +25,24 @@ class SyncFileSystemService;
 // with each other.
 class SyncProcessRunner {
  public:
+  // Default delay when more changes are available.
+  static const int64 kSyncDelayInMilliseconds;
+
+  // Default delay when the previous change has had an error (but remote service
+  // is running).
+  static const int64 kSyncDelayWithSyncError;
+
+  // Default delay when there're more than 10 pending changes.
+  static const int64 kSyncDelayFastInMilliseconds;
+  static const int kPendingChangeThresholdForFastSync;
+
+  // Default delay when remote service is temporarily unavailable.
+  // The delay backs off exponentially from initial value on repeated failure.
+  static const int64 kSyncDelaySlowInMilliseconds;
+
+  // Default delay when there're no changes.
+  static const int64 kSyncDelayMaxInMilliseconds;
+
   class Client {
    public:
     virtual ~Client() {}