Revert of cc: Add mailbox support to ResourceProvider write locks.

cc/trees/layer_tree_host_unittest_context.cc

 // Copyright 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 <stddef.h>
 #include <stdint.h>
 
 #include "base/memory/ptr_util.h"
 #include "cc/layers/heads_up_display_layer.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 924 matching lines @@
     gpu::SyncToken mailbox_sync_token;
     AddOneOfEveryQuadType(pass.get(), child_resource_provider_.get(),
                           RenderPassId(2, 1), &mailbox_sync_token);
 
     frame_data->render_pass_list.push_back(std::move(pass_for_quad));
     frame_data->render_pass_list.push_back(std::move(pass));
 
     ResourceId resource = child_resource_provider_->CreateResource(
         gfx::Size(4, 4), ResourceProvider::TEXTURE_HINT_IMMUTABLE, RGBA_8888);
     ResourceProvider::ScopedWriteLockGL lock(child_resource_provider_.get(),
-                                             resource, false);
+                                             resource);
 
     gpu::Mailbox mailbox;
     gl->GenMailboxCHROMIUM(mailbox.name);
 
     const GLuint64 fence_sync = gl->InsertFenceSyncCHROMIUM();
     gl->ShallowFlushCHROMIUM();
 
     gpu::SyncToken sync_token;
     gl->GenSyncTokenCHROMIUM(fence_sync, sync_token.GetData());
 
@@ skipping 647 matching lines @@
   void AfterTest() override {}
 
   bool deferred_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(
     LayerTreeHostContextTestLoseAfterSendingBeginMainFrame);
 
 }  // namespace
 }  // namespace cc