[Sync] Move sessions files from sync_driver to sync_sessions.

components/sync_sessions/tab_node_pool.h

Index: components/sync_sessions/tab_node_pool.h
diff --git a/components/sync_driver/tab_node_pool.h b/components/sync_sessions/tab_node_pool.h
similarity index 97%
rename from components/sync_driver/tab_node_pool.h
rename to components/sync_sessions/tab_node_pool.h
index 6cb6a93b786530c434bb6954f48e2d5a29976fb0..d2539c0832ac13a6ac2175bfa447865dfdd6dee4 100644
--- a/components/sync_driver/tab_node_pool.h
+++ b/components/sync_sessions/tab_node_pool.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_SYNC_DRIVER_TAB_NODE_POOL_H_
-#define COMPONENTS_SYNC_DRIVER_TAB_NODE_POOL_H_
+#ifndef COMPONENTS_SYNC_SESSIONS_TAB_NODE_POOL_H_
+#define COMPONENTS_SYNC_SESSIONS_TAB_NODE_POOL_H_
 
 #include <map>
 #include <set>
@@ -41,9 +41,7 @@ class TabNodePool {
  public:
   TabNodePool();
   ~TabNodePool();
-  enum InvalidTab {
-    kInvalidTabID = -1
-  };
+  enum InvalidTab { kInvalidTabID = -1 };
 
   // If free nodes > kFreeNodesHighWatermark, delete all free nodes until
   // free nodes <= kFreeNodesLowWatermark.
@@ -161,4 +159,4 @@ class TabNodePool {
 
 }  // namespace browser_sync
 
-#endif  // COMPONENTS_SYNC_DRIVER_TAB_NODE_POOL_H_
+#endif  // COMPONENTS_SYNC_SESSIONS_TAB_NODE_POOL_H_