Raster: Allow a RasterSource to specify its color space

cc/raster/one_copy_raster_buffer_provider.cc

 // Copyright 2014 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/raster/one_copy_raster_buffer_provider.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 174 matching lines @@
     ContextProvider::ScopedContextLock scoped_context(worker_context_provider_);
     gpu::gles2::GLES2Interface* gl = scoped_context.ContextGL();
     DCHECK(gl);
     // Synchronize with compositor.
     gl->WaitSyncTokenCHROMIUM(sync_token.GetConstData());
   }
 
   std::unique_ptr<StagingBuffer> staging_buffer =
       staging_pool_.AcquireStagingBuffer(resource, previous_content_id);
 
+  sk_sp<SkColorSpace> raster_color_space =
+      raster_source->HasImpliedColorSpace() ? nullptr
+                                            : resource_lock->sk_color_space();
+
   PlaybackToStagingBuffer(staging_buffer.get(), resource, raster_source,
                           raster_full_rect, raster_dirty_rect, scales,
-                          resource_lock->sk_color_space(), playback_settings,
+                          raster_color_space, playback_settings,
                           previous_content_id, new_content_id);
 
   CopyOnWorkerThread(staging_buffer.get(), resource_lock, sync_token,
                      raster_source, previous_content_id, new_content_id);
 
   staging_pool_.ReleaseStagingBuffer(std::move(staging_buffer));
 }
 
 void OneCopyRasterBufferProvider::PlaybackToStagingBuffer(
     StagingBuffer* staging_buffer,
@@ skipping 173 matching lines @@
   resource_lock->set_synchronized(!async_worker_context_enabled_);
 }
 
 gfx::BufferUsage OneCopyRasterBufferProvider::StagingBufferUsage() const {
   return use_partial_raster_
              ? gfx::BufferUsage::GPU_READ_CPU_READ_WRITE_PERSISTENT
              : gfx::BufferUsage::GPU_READ_CPU_READ_WRITE;
 }
 
 }  // namespace cc