Backed out changeset c7be30a5321e (bug 1238433) for bustage

dom/html/HTMLMediaElement.cpp

@@ -108,9 +108,6 @@ static mozilla::LazyLogModule gMediaElementEventsLog("nsMediaElementEvents");
 
 #include "mozilla/EventStateManager.h"
 
-#include "mozilla/dom/HTMLVideoElement.h"
-#include "mozilla/dom/VideoPlaybackQuality.h"
-
 using namespace mozilla::layers;
 using mozilla::net::nsMediaFragmentURIParser;
 
@@ -2704,17 +2701,6 @@ HTMLMediaElement::ReportMSETelemetry()
     }
   }
 
-  if (HTMLVideoElement* vid = HTMLVideoElement::FromContentOrNull(this)) {
-    RefPtr<VideoPlaybackQuality> quality = vid->GetVideoPlaybackQuality();
-    uint64_t totalFrames = quality->TotalVideoFrames();
-    uint64_t droppedFrames = quality->DroppedVideoFrames();
-    uint32_t percentage = 100 * droppedFrames / totalFrames;
-    LOG(LogLevel::Debug,
-        ("Reporting telemetry DROPPED_FRAMES_IN_VIDEO_PLAYBACK"));
-    Telemetry::Accumulate(Telemetry::VIDEO_DROPPED_FRAMES_PROPORTION,
-                          percentage);
-  }
-
   Telemetry::Accumulate(Telemetry::VIDEO_MSE_UNLOAD_STATE, state);
   LOG(LogLevel::Debug, ("%p VIDEO_MSE_UNLOAD_STATE = %d", this, state));
 

toolkit/components/telemetry/Histograms.json

@@ -10201,15 +10201,6 @@
     "kind": "count",
     "description": "Uses of HTMLMediaElement.fastSeek"
   },
-  "VIDEO_DROPPED_FRAMES_PROPORTION" : {
-    "alert_emails": ["lchristie@mozilla.com", "cpearce@mozilla.com"],
-    "expires_in_version": "55",
-    "kind": "linear",
-    "high": "100",
-    "n_buckets": 101,
-    "bug_numbers": [1238433],
-    "description": "Percentage of frames decoded frames dropped in an HTMLVideoElement"
-  },
   "TAB_SWITCH_CACHE_POSITION": {
     "expires_in_version": "55",
     "bug_numbers": [1242013],