Merge "Reset buffer after stop protolog to file" am: 18493d6267 am: 140fb234fd am: 83bb3e261b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2411151

Change-Id: Ia2bfdfc4821e0e11bd54f48710d8125346aad18d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

core/java/com/android/internal/protolog/BaseProtoLogImpl.java

@@ -259,6 +259,7 @@ public class BaseProtoLogImpl {
             if (writeToFile) {
                 writeProtoLogToFileLocked();
                 logAndPrintln(pw, "Log written to " + mLogFile + ".");
+                mBuffer.resetBuffer();
             }
             if (mProtoLogEnabled) {
                 logAndPrintln(pw, "ERROR: logging was re-enabled while waiting for flush.");