[Android WebView] Implement copying and uploading of Minidumps.

android_webview/java/src/org/chromium/android_webview/crash/MinidumpUploader.java

Index: android_webview/java/src/org/chromium/android_webview/crash/MinidumpUploader.java
diff --git a/android_webview/java/src/org/chromium/android_webview/crash/MinidumpUploader.java b/android_webview/java/src/org/chromium/android_webview/crash/MinidumpUploader.java
new file mode 100644
index 0000000000000000000000000000000000000000..1957f36a8f9cb75b67815f622e7f661f5c44b6f7
--- /dev/null
+++ b/android_webview/java/src/org/chromium/android_webview/crash/MinidumpUploader.java
@@ -0,0 +1,30 @@
+// 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.android_webview.crash;
+
+/**
+ * Interface for uploading minidumps.
+ */
+public interface MinidumpUploader {
+    /**
+     * Try to upload all the minidumps in the crash directory.
+     * This method will be called on the UI thread of our JobService.
+     * @param uploadsFinishedCallback a callback that will be called when the uploading is finished
+     * (whether or not all of the uploads succeeded).
+     */
+    void uploadAllMinidumps(UploadsFinishedCallback uploadsFinishedCallback);
+
+    /**
+     * Cancel the current set of uploads.
+     * @return whether there are still uploads to be done.
+     */
+    boolean cancelUploads();
+
+    /**
+     * Provides an interface for the callback that will be called if all uploads are finished before
+     * they are canceled.
+     */
+    public interface UploadsFinishedCallback { public void uploadsFinished(boolean reschedule); }
+}