[Sync] Rework SharedValue<T> into Immutable<T>

chrome/browser/sync/js/js_transaction_observer.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/sync/js/js_transaction_observer.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
@@ skipping 42 matching lines @@
 
 // Max number of mutations we attempt to convert to values (to avoid
 // running out of memory).
 const size_t kMutationLimit = 300;
 
 }  // namespace
 
 void JsTransactionObserver::OnTransactionMutate(
     const tracked_objects::Location& location,
     const syncable::WriterTag& writer,
-    const syncable::SharedEntryKernelMutationMap& mutations,
+    const syncable::ImmutableEntryKernelMutationMap& mutations,
     const syncable::ModelTypeBitSet& models_with_changes) {
   DCHECK(non_thread_safe_.CalledOnValidThread());
   if (!event_handler_.IsInitialized()) {
     return;
   }
   DictionaryValue details;
   details.SetString("location", GetLocationString(location));
   details.SetString("writer", syncable::WriterTagToString(writer));
   Value* mutations_value = NULL;
   const size_t mutations_size = mutations.Get().size();
@@ skipping 29 matching lines @@
     const std::string& name, const JsEventDetails& details) {
   if (!event_handler_.IsInitialized()) {
     NOTREACHED();
     return;
   }
   event_handler_.Call(from_here,
                       &JsEventHandler::HandleJsEvent, name, details);
 }
 
 }  // namespace browser_sync