[Crash Reporting] Implement a more direct bridge for extracting logcat output.

chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpDirectoryObserver.java

Index: chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpDirectoryObserver.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpDirectoryObserver.java b/chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpDirectoryObserver.java
deleted file mode 100644
index 033af29f96ae9b1e85fbf8a49089e16a3b2c2b40..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpDirectoryObserver.java
+++ /dev/null
@@ -1,49 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.chrome.browser.crash;
-
-import android.os.AsyncTask;
-import android.os.FileObserver;
-
-import org.chromium.base.ContextUtils;
-import org.chromium.components.minidump_uploader.CrashFileManager;
-
-import java.io.File;
-
-/**
- * The FileObserver that monitors the minidump directory for new crash records.
- */
-public class MinidumpDirectoryObserver extends FileObserver {
-    /**
-     * A utility class to help manage the contents of the crash minidump local storage directory.
-     */
-    final CrashFileManager mFileManager;
-
-    public MinidumpDirectoryObserver() {
-        this(new CrashFileManager(ContextUtils.getApplicationContext().getCacheDir()));
-    }
-
-    private MinidumpDirectoryObserver(CrashFileManager fileManager) {
-        // The file observer detects MOVED_TO for child processes.
-        super(fileManager.getCrashDirectory().toString(), FileObserver.MOVED_TO);
-        mFileManager = fileManager;
-    }
-
-    /**
-     * When a minidump is detected, extract and append a logcat to it, then upload it to the crash
-     * server.
-     */
-    @Override
-    public void onEvent(int event, String path) {
-        // This is executed on a thread dedicated to FileObserver.
-        // Note: It's possible for |path| to be null: http://crbug.com/711404
-        if (path != null && CrashFileManager.isMinidumpMIMEFirstTry(path)) {
-            // Note that the logcat extraction might fail. This is ok; in that case, the minidump
-            // will be found and uploaded upon the next browser launch.
-            File minidump = mFileManager.getCrashFile(path);
-            AsyncTask.THREAD_POOL_EXECUTOR.execute(new LogcatExtractionRunnable(minidump));
-        }
-    }
-}