refactor: rename the atom directory to shell

shell/browser/osr/osr_host_display_client_mac.mm

@@ -0,0 +1,35 @@
+// Copyright (c) 2019 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/osr/osr_host_display_client.h"
+
+#include <IOSurface/IOSurface.h>
+
+namespace atom {
+
+void OffScreenHostDisplayClient::OnDisplayReceivedCALayerParams(
+    const gfx::CALayerParams& ca_layer_params) {
+  if (!ca_layer_params.is_empty) {
+    base::ScopedCFTypeRef<IOSurfaceRef> io_surface(
+        IOSurfaceLookupFromMachPort(ca_layer_params.io_surface_mach_port));
+
+    gfx::Size pixel_size_ = ca_layer_params.pixel_size;
+    void* pixels = static_cast<void*>(IOSurfaceGetBaseAddress(io_surface));
+    size_t stride = IOSurfaceGetBytesPerRow(io_surface);
+
+    struct IOSurfacePinner {
+      base::ScopedCFTypeRef<IOSurfaceRef> io_surface;
+    };
+
+    SkBitmap bitmap;
+    bitmap.installPixels(
+        SkImageInfo::MakeN32(pixel_size_.width(), pixel_size_.height(),
+                             kPremul_SkAlphaType),
+        pixels, stride);
+    bitmap.setImmutable();
+    callback_.Run(ca_layer_params.damage, bitmap);
+  }
+}
+
+}  // namespace atom