Raster: Allow a RasterSource to specify its color space

cc/raster/bitmap_raster_buffer_provider.cc

Index: cc/raster/bitmap_raster_buffer_provider.cc
diff --git a/cc/raster/bitmap_raster_buffer_provider.cc b/cc/raster/bitmap_raster_buffer_provider.cc
index f0a7126190aac0e5fba4d4ba6d0bd037e2435dc4..c92d5d66c740abf1f6f6caa4cf7ce4f47d2f9551 100644
--- a/cc/raster/bitmap_raster_buffer_provider.cc
+++ b/cc/raster/bitmap_raster_buffer_provider.cc
@@ -50,11 +50,15 @@ class RasterBufferImpl : public RasterBuffer {
     DCHECK(!playback_rect.IsEmpty())
         << "Why are we rastering a tile that's not dirty?";
 
+    sk_sp<SkColorSpace> raster_color_space =
+        raster_source->HasImpliedColorSpace() ? nullptr
+                                              : lock_.sk_color_space();
+
     size_t stride = 0u;
     RasterBufferProvider::PlaybackToMemory(
         lock_.sk_bitmap().getPixels(), resource_->format(), resource_->size(),
         stride, raster_source, raster_full_rect, playback_rect, scales,
-        lock_.sk_color_space(), playback_settings);
+        raster_color_space, playback_settings);
   }
 
  private: