Switch to mojo localstorage backend by default.

content/renderer/renderer_blink_platform_impl.cc

 // Copyright (c) 2012 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 "content/renderer/renderer_blink_platform_impl.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 448 matching lines @@
       return;
   }
 
   RenderThread* thread = RenderThread::Get();
   if (thread)  // NULL in unittests.
     thread->Send(new RenderProcessHostMsg_SuddenTerminationChanged(enabled));
 }
 
 std::unique_ptr<WebStorageNamespace>
 RendererBlinkPlatformImpl::CreateLocalStorageNamespace() {
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kMojoLocalStorage)) {
+  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableMojoLocalStorage)) {
     if (!local_storage_cached_areas_) {
       local_storage_cached_areas_.reset(new LocalStorageCachedAreas(
           RenderThreadImpl::current()->GetStoragePartitionService()));
     }
     return base::MakeUnique<LocalStorageNamespace>(
         local_storage_cached_areas_.get());
   }
 
   return base::MakeUnique<WebStorageNamespaceImpl>();
 }
@@ skipping 800 matching lines @@
 //------------------------------------------------------------------------------
 void RendererBlinkPlatformImpl::RequestPurgeMemory() {
   // TODO(tasak|bashi): We should use ChildMemoryCoordinator here, but
   // ChildMemoryCoordinator isn't always available as it's only initialized
   // when kMemoryCoordinatorV0 is enabled.
   // Use ChildMemoryCoordinator when memory coordinator is always enabled.
   base::MemoryCoordinatorClientRegistry::GetInstance()->PurgeMemory();
 }
 
 }  // namespace content