Revert "Add debug BeginFrame tracking"

This reverts commit 61bb69a.

Reason for revert: Removing debug instrumentation before branch.

Original change's description:
> Add debug BeginFrame tracking
> 
> Add some temporary member variables to BeginFrameTracker that stores the
> total sent/received and the last 10 sent/received BeginFrameIds. Despite
> adding logic to stop sending OnBeginFrame() to unresponsive clients it
> didn't help with the large number of unread messages in mojo message
> queue. This information will do a better job of verifying if client is
> in fact reading (and responding to) the OnBeginFrame() messages.
> 
> The |begin_frame_tracker_| is included in a few minidumps I looked at
> it, so this information should be available in crash reports. Otherwise
> we'll have to copy the information into the stack in OnBeginFrame().
> 
> Bug: 1011441
> Change-Id: I44112d933fb4470fb037e7bfd2d9dc05dd826a94
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1994093
> Reviewed-by: Saman Sami <samans@chromium.org>
> Commit-Queue: kylechar <kylechar@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#730310}

TBR=kylechar@chromium.org,samans@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1011441
Change-Id: I3c7d5572c19ede7d653d24175d7023e7a7e282c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2025768
Reviewed-by: kylechar <kylechar@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#736090}

components/viz/service/frame_sinks/begin_frame_tracker.cc

@@ -6,22 +6,12 @@
 
 namespace viz {
 
-BeginFrameTracker::BeginFrameTracker() = default;
-
-BeginFrameTracker::~BeginFrameTracker() = default;
-
 void BeginFrameTracker::SentBeginFrame(const BeginFrameArgs& args) {
-  ++total_begin_frames_sent_;
-  recent_begin_frames_sent_.SaveToBuffer(args.frame_id);
-
   ++outstanding_begin_frames_;
   last_frame_id_ = args.frame_id;
 }
 
 void BeginFrameTracker::ReceivedAck(const BeginFrameAck& ack) {
-  ++total_acks_received_;
-  recent_acks_received_.SaveToBuffer(ack.frame_id);
-
   if (MatchesLastSent(ack)) {
     // If the BeginFrameAck matches the last sent BeginFrameArgs then we know
     // the client has read every message from the pipe. While the client

components/viz/service/frame_sinks/begin_frame_tracker.h

@@ -5,7 +5,6 @@
 #ifndef COMPONENTS_VIZ_SERVICE_FRAME_SINKS_BEGIN_FRAME_TRACKER_H_
 #define COMPONENTS_VIZ_SERVICE_FRAME_SINKS_BEGIN_FRAME_TRACKER_H_
 
-#include "base/containers/ring_buffer.h"
 #include "components/viz/common/frame_sinks/begin_frame_args.h"
 #include "components/viz/service/viz_service_export.h"
 
@@ -24,9 +23,6 @@ class VIZ_SERVICE_EXPORT BeginFrameTracker {
   static constexpr int kLimitStop = 100;
   static constexpr int kLimitThrottle = 10;
 
-  BeginFrameTracker();
-  ~BeginFrameTracker();
-
   // To be called every time OnBeginFrame() is sent.
   void SentBeginFrame(const BeginFrameArgs& args);
 
@@ -42,15 +38,6 @@ class VIZ_SERVICE_EXPORT BeginFrameTracker {
   int outstanding_begin_frames_ = 0;
 
   BeginFrameId last_frame_id_;
-
-  // The following variables are keeping track of some information about sent
-  // and received BeginFrameIds. This information is just being tracked only so
-  // it's available in crash minidumps to help debug https://crbug.com/1011441.
-  // TODO(crbug.com/1011441): Remove this before it hits stable channel!
-  int total_begin_frames_sent_ = 0;
-  int total_acks_received_ = 0;
-  base::RingBuffer<BeginFrameId, 10> recent_begin_frames_sent_;
-  base::RingBuffer<BeginFrameId, 10> recent_acks_received_;
 };
 
 }  // namespace viz