Switch to mojo localstorage backend by default.

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index d18fd32416a5d398395e58b9e776a8c26850380c..ddb6de2ff16287213422be0a61f73c08d49eadaf 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -1633,9 +1633,8 @@ void RenderProcessHostImpl::BindFrameSinkProvider(
 void RenderProcessHostImpl::CreateStoragePartitionService(
     const service_manager::BindSourceInfo& source_info,
     mojom::StoragePartitionServiceRequest request) {
-  // DO NOT REMOVE THIS COMMAND LINE CHECK WITHOUT SECURITY REVIEW!
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kMojoLocalStorage)) {
+  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableMojoLocalStorage)) {
     storage_partition_impl_->Bind(std::move(request));
   }
 }
@@ -2149,7 +2148,7 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
     switches::kMainFrameResizesAreOrientationChanges,
     switches::kMaxUntiledLayerWidth,
     switches::kMaxUntiledLayerHeight,
-    switches::kMojoLocalStorage,
+    switches::kDisableMojoLocalStorage,
     switches::kMSEAudioBufferSizeLimit,
     switches::kMSEVideoBufferSizeLimit,
     switches::kNoReferrers,