sync: Move all the js_* files into a js/ subdirectory.

chrome/browser/sync/js/js_transaction_observer.h

Index: chrome/browser/sync/js/js_transaction_observer.h
diff --git a/chrome/browser/sync/js_transaction_observer.h b/chrome/browser/sync/js/js_transaction_observer.h
similarity index 90%
rename from chrome/browser/sync/js_transaction_observer.h
rename to chrome/browser/sync/js/js_transaction_observer.h
index bf59a6d8d7e05d63e41ded63353afe2a7aa05915..aa618ceffc9be50e34c1a464b342e7ffa8e611a3 100644
--- a/chrome/browser/sync/js_transaction_observer.h
+++ b/chrome/browser/sync/js/js_transaction_observer.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 CHROME_BROWSER_SYNC_JS_TRANSACTION_OBSERVER_H_
-#define CHROME_BROWSER_SYNC_JS_TRANSACTION_OBSERVER_H_
+#ifndef CHROME_BROWSER_SYNC_JS_JS_TRANSACTION_OBSERVER_H_
+#define CHROME_BROWSER_SYNC_JS_JS_TRANSACTION_OBSERVER_H_
 #pragma once
 
 #include <string>
@@ -58,4 +58,4 @@ class JsTransactionObserver : public syncable::TransactionObserver {
 
 }  // namespace browser_sync
 
-#endif  // CHROME_BROWSER_SYNC_JS_TRANSACTION_OBSERVER_H_
+#endif  // CHROME_BROWSER_SYNC_JS_JS_TRANSACTION_OBSERVER_H_