cc: Remove the software compositing bool from PrepareTextureMailbox

cc/layers/texture_layer.cc

 // Copyright 2010 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 "cc/layers/texture_layer.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
@@ skipping 167 matching lines @@
 
 bool TextureLayer::HasDrawableContent() const {
   return (client_ || holder_ref_) && Layer::HasDrawableContent();
 }
 
 bool TextureLayer::Update() {
   bool updated = Layer::Update();
   if (client_) {
     TextureMailbox mailbox;
     std::unique_ptr<SingleReleaseCallback> release_callback;
-    if (client_->PrepareTextureMailbox(
-            &mailbox,
-            &release_callback,
-            layer_tree_host()->UsingSharedMemoryResources())) {
+    if (client_->PrepareTextureMailbox(&mailbox, &release_callback)) {
       // Already within a commit, no need to do another one immediately.
       bool requires_commit = false;
       bool allow_mailbox_reuse = false;
       SetTextureMailboxInternal(mailbox, std::move(release_callback),
                                 requires_commit, allow_mailbox_reuse);
       updated = true;
     }
   }
 
   // SetTextureMailbox could be called externally and the same mailbox used for
@@ skipping 94 matching lines @@
 void TextureLayer::TextureMailboxHolder::ReturnAndReleaseOnImplThread(
     const gpu::SyncToken& sync_token,
     bool is_lost,
     BlockingTaskRunner* main_thread_task_runner) {
   Return(sync_token, is_lost);
   main_thread_task_runner->PostTask(
       FROM_HERE, base::Bind(&TextureMailboxHolder::InternalRelease, this));
 }
 
 }  // namespace cc