cc: Remove the software compositing bool from PrepareTextureMailbox

cc/output/software_renderer.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 "cc/output/software_renderer.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/base/math_util.h"
 #include "cc/output/compositor_frame.h"
@@ skipping 45 matching lines @@
 SoftwareRenderer::SoftwareRenderer(const RendererSettings* settings,
                                    OutputSurface* output_surface,
                                    ResourceProvider* resource_provider)
     : DirectRenderer(settings, output_surface, resource_provider),
       output_device_(output_surface->software_device()) {
   if (resource_provider_) {
     capabilities_.max_texture_size = resource_provider_->max_texture_size();
     capabilities_.best_texture_format =
         resource_provider_->best_texture_format();
   }
-  capabilities_.using_shared_memory_resources = true;
 }
 
 SoftwareRenderer::~SoftwareRenderer() {}
 
 const RendererCapabilitiesImpl& SoftwareRenderer::Capabilities() const {
   return capabilities_;
 }
 
 bool SoftwareRenderer::CanPartialSwap() {
   return true;
@@ skipping 642 matching lines @@
       ApplyImageFilter(filter.get(), quad, backdrop_bitmap, nullptr);
 
   if (!filter_backdrop_image)
     return nullptr;
 
   return filter_backdrop_image->makeShader(content_tile_mode, content_tile_mode,
                                            &filter_backdrop_transform);
 }
 
 }  // namespace cc