[Sync] Made some sync session member functions const

chrome/browser/sync/sessions/sync_session_unittest.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/sessions/sync_session.h"
 
 #include "base/compiler_specific.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
@@ skipping 64 matching lines @@
       const sessions::SyncSessionSnapshot& snapshot) {
     FailControllerInvocationIfDisabled("SyncProtocolError");
   }
 
   // ModelSafeWorkerRegistrar implementation.
   virtual void GetWorkers(std::vector<ModelSafeWorker*>* out) OVERRIDE {}
   virtual void GetModelSafeRoutingInfo(ModelSafeRoutingInfo* out) OVERRIDE {
     out->swap(routes_);
   }
 
-  StatusController* status() { return session_->status_controller(); }
+  StatusController* status() { return session_->mutable_status_controller(); }
  protected:
   void FailControllerInvocationIfDisabled(const std::string& msg) {
     if (!controller_invocations_allowed_)
       FAIL() << msg;
   }
 
   syncable::ModelTypeBitSet ParamsMeaningAllEnabledTypes() {
     syncable::ModelTypeBitSet request_params;
     request_params[syncable::BOOKMARKS] = true;
     request_params[syncable::AUTOFILL] = true;
@@ skipping 382 matching lines @@
   EXPECT_EQ(empty_payload, original[syncable::BOOKMARKS]);
   EXPECT_EQ(payload1, original[syncable::PASSWORDS]);
   EXPECT_EQ(payload1, original[syncable::AUTOFILL]);
   EXPECT_EQ(payload2, original[syncable::SESSIONS]);
   EXPECT_EQ(payload3, original[syncable::THEMES]);
 }
 
 }  // namespace
 }  // namespace sessions
 }  // namespace browser_sync