media: split GpuMemoryBufferVideoFramePool into GpuMemoryBufferVideoFrameCopier/Pool

media/BUILD.gn

Index: media/BUILD.gn
diff --git a/media/BUILD.gn b/media/BUILD.gn
index 3641f6a2fe4250748da71c2f5e01a49e22f67eca..cac5f921b35cdbc126d1dfd42e8c20efd319bee2 100644
--- a/media/BUILD.gn
+++ b/media/BUILD.gn
@@ -198,6 +198,8 @@ component("media") {
     "renderers/video_renderer_impl.h",
     "video/fake_video_encode_accelerator.cc",
     "video/fake_video_encode_accelerator.h",
+    "video/gpu_memory_buffer_video_frame_copier.cc",
+    "video/gpu_memory_buffer_video_frame_copier.h",
     "video/gpu_memory_buffer_video_frame_pool.cc",
     "video/gpu_memory_buffer_video_frame_pool.h",
     "video/h264_poc.cc",
@@ -540,6 +542,7 @@ test("media_unittests") {
     "renderers/renderer_impl_unittest.cc",
     "renderers/skcanvas_video_renderer_unittest.cc",
     "renderers/video_renderer_impl_unittest.cc",
+    "video/gpu_memory_buffer_video_frame_copier_unittest.cc",
     "video/gpu_memory_buffer_video_frame_pool_unittest.cc",
     "video/h264_poc_unittest.cc",
   ]
@@ -717,8 +720,8 @@ test("audio_unittests") {
 source_set("test_support") {
   testonly = true
   sources = [
-    "renderers/mock_gpu_memory_buffer_video_frame_pool.cc",
-    "renderers/mock_gpu_memory_buffer_video_frame_pool.h",
+    "renderers/mock_gpu_memory_buffer_video_frame_copier.cc",
+    "renderers/mock_gpu_memory_buffer_video_frame_copier.h",
     "renderers/mock_gpu_video_accelerator_factories.cc",
     "renderers/mock_gpu_video_accelerator_factories.h",
     "video/mock_video_decode_accelerator.cc",