Revert to previous metric for jank reporting

Test: adb shell dumpsys gfxinfo com.android.systemui
Fixes: 180959287
Change-Id: I47deb32b61c6a49a720946447c4fc48b9779d58a
diff --git a/libs/hwui/JankTracker.cpp b/libs/hwui/JankTracker.cpp
index 2cd9b7b..b570af5 100644
--- a/libs/hwui/JankTracker.cpp
+++ b/libs/hwui/JankTracker.cpp
@@ -112,7 +112,7 @@
     std::lock_guard lock(mDataMutex);
 
     // Fast-path for jank-free frames
-    int64_t totalDuration = frame.duration(sFrameStart, FrameInfoIndex::FrameCompleted);
+    int64_t totalDuration = frame.duration(sFrameStart, FrameInfoIndex::SwapBuffersCompleted);
     if (mDequeueTimeForgiveness && frame[FrameInfoIndex::DequeueBufferDuration] > 500_us) {
         nsecs_t expectedDequeueDuration = mDequeueTimeForgiveness + frame[FrameInfoIndex::Vsync] -
                                           frame[FrameInfoIndex::IssueDrawCommandsStart];