Moves video frame callbacks from VideoFrameCompositor to Renderer.

BUG=571155

Review-Url: https://codereview.chromium.org/1978973002
Cr-Commit-Position: refs/heads/master@{#394209}

• chromecast/browser/media/cast_renderer.cc[diff]
• chromecast/browser/media/cast_renderer.h[diff]
• chromecast/renderer/media/cma_renderer.cc[diff]
• chromecast/renderer/media/cma_renderer.h[diff]
• media/base/BUILD.gn[diff]
• media/base/mock_filters.h[diff]
• media/base/pipeline.h[diff]
• media/base/pipeline_impl.cc[diff]
• media/base/pipeline_impl.h[diff]
• media/base/pipeline_impl_unittest.cc[diff]
• media/base/renderer_client.h[diff]
• media/blink/video_frame_compositor.cc[diff]
• media/blink/video_frame_compositor.h[diff]
• media/blink/video_frame_compositor_unittest.cc[diff]
• media/blink/webmediaplayer_impl.cc[diff]
• media/blink/webmediaplayer_impl.h[diff]
• media/filters/pipeline_controller_unittest.cc[diff]
• media/media.gyp[diff]
• media/mojo/interfaces/renderer.mojom[diff]
• media/mojo/services/media_mojo_unittest.cc[diff]
• media/mojo/services/mojo_renderer_impl.cc[diff]
• media/mojo/services/mojo_renderer_impl.h[diff]
• media/mojo/services/mojo_renderer_service.cc[diff]
• media/mojo/services/mojo_renderer_service.h[diff]
• media/renderers/audio_renderer_impl_unittest.cc[diff]
• media/renderers/renderer_impl.cc[diff]
• media/renderers/renderer_impl.h[diff]
• media/renderers/video_renderer_impl.cc[diff]
• media/renderers/video_renderer_impl.h[diff]
• media/renderers/video_renderer_impl_unittest.cc[diff]
• media/test/pipeline_integration_test_base.h[diff]