Remove the V1 cc metrics path

The last of the usage of V1 metrics in ChromeOS was removed:
  https://chromium-review.googlesource.com/c/chromium/src/+/5213406

This change removes all of the path usage to calculate V1 metrics.
Several signals are no longer needed by FrameSequenceTacker as we use
the AddSortedFrame path for V3. This also removes old debugging traces
that are no longer needed, with PipelineReporter being easier to follow.
This should address the OoM seen in crbug.com/1518417

FrameSequenceTackerTest was overhauled to reflect the new signalling
and AddSortedFrame post processing.

This also removes V1 Graphics.Smoothness.*Stale as the final Finch
using it launched.

OBSOLETE_HISTOGRAM[Graphics.Smoothness.MaxStale]=finches complete, no longer needed
OBSOLETE_HISTOGRAM[Graphics.Smoothness.Stale]=finches complete, no longer needed

Bug: 1256879, 1518417
Change-Id: I526dec891fec850caeb5eb4e7e7305061b7c59be
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5224910
Reviewed-by: Kyle Charbonneau <kylechar@chromium.org>
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1252174}

• cc/BUILD.gn[diff]
• cc/metrics/frame_sequence_metrics.cc[diff]
• cc/metrics/frame_sequence_metrics.h[diff]
• cc/metrics/frame_sequence_metrics_unittest.cc[diff]
• cc/metrics/frame_sequence_tracker.cc[diff]
• cc/metrics/frame_sequence_tracker.h[diff]
• cc/metrics/frame_sequence_tracker_collection.cc[diff]
• cc/metrics/frame_sequence_tracker_collection.h[diff]
• cc/metrics/frame_sequence_tracker_unittest.cc[diff]
• cc/metrics/jank_metrics.cc[Deleted - diff]
• cc/metrics/jank_metrics.h[Deleted - diff]
• cc/test/layer_tree_test.cc[diff]
• cc/test/test_hooks.h[diff]
• cc/trees/layer_tree_host_impl.cc[diff]
• cc/trees/layer_tree_host_impl.h[diff]
• cc/trees/layer_tree_host_unittest.cc[diff]
• cc/trees/layer_tree_host_unittest_scroll.cc[diff]
• cc/trees/proxy_impl.cc[diff]
• cc/trees/single_thread_proxy.cc[diff]
• third_party/blink/renderer/platform/graphics/video_frame_submitter.cc[diff]
• tools/metrics/histograms/metadata/compositing/histograms.xml[diff]
• tools/metrics/histograms/metadata/histogram_suffixes_list.xml[diff]