OnFinishImplFrame checks reporters in all stages

OnFinishImplFrame call might happen when the corresponding frame is in a
stage rather than BeginImpl or BeginMain. This change checks for the
other reporters as well.

Bug: chromium:1067245
Change-Id: I9b30c78ed5d43397f94ec627c2f7bd099a92f522
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2133868Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Auto-Submit: Behdad Bakhshinategh <behdadb@chromium.org>
Commit-Queue: Behdad Bakhshinategh <behdadb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755844}

cc/metrics/compositor_frame_reporting_controller.cc

@@ -232,12 +232,11 @@ void CompositorFrameReportingController::DidNotProduceFrame(
 
 void CompositorFrameReportingController::OnFinishImplFrame(
     const viz::BeginFrameId& id) {
-  if (reporters_[PipelineStage::kBeginImplFrame]) {
-    DCHECK_EQ(reporters_[PipelineStage::kBeginImplFrame]->frame_id_, id);
-    reporters_[PipelineStage::kBeginImplFrame]->OnFinishImplFrame(Now());
-  } else if (reporters_[PipelineStage::kBeginMainFrame]) {
-    DCHECK_EQ(reporters_[PipelineStage::kBeginMainFrame]->frame_id_, id);
-    reporters_[PipelineStage::kBeginMainFrame]->OnFinishImplFrame(Now());
+  for (auto& reporter : reporters_) {
+    if (reporter && reporter->frame_id_ == id) {
+      reporter->OnFinishImplFrame(Now());
+      return;
+    }
   }
 }