media: Add out-of-line copy ctors for complex classes.

media/filters/video_renderer_algorithm.cc

Index: media/filters/video_renderer_algorithm.cc
diff --git a/media/filters/video_renderer_algorithm.cc b/media/filters/video_renderer_algorithm.cc
index 230c464bbea1a0da57b9cb19009e037ec65db885..2a9836721a6b1a95ad205cf938b3a40c30e26e37 100644
--- a/media/filters/video_renderer_algorithm.cc
+++ b/media/filters/video_renderer_algorithm.cc
@@ -22,6 +22,9 @@ VideoRendererAlgorithm::ReadyFrame::ReadyFrame(
       drop_count(0) {
 }
 
+VideoRendererAlgorithm::ReadyFrame::ReadyFrame(const ReadyFrame& other) =
+    default;
+
 VideoRendererAlgorithm::ReadyFrame::~ReadyFrame() {
 }