[Android] Wire up manual crash uploads.

components/upload_list/upload_list.cc

 // Copyright 2013 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.
 
 #include "components/upload_list/upload_list.h"
 
 #include <algorithm>
 #include <iterator>
 #include <utility>
 
@@ skipping 121 matching lines @@
 
 void UploadList::GetUploads(size_t max_count,
                             std::vector<UploadInfo>* uploads) {
   DCHECK(thread_checker_.CalledOnValidThread());
   std::copy(uploads_.begin(),
             uploads_.begin() + std::min(uploads_.size(), max_count),
             std::back_inserter(*uploads));
 }
 
 void UploadList::RequestSingleCrashUploadAsync(const std::string& local_id) {
-#if defined(OS_WIN) || defined(OS_MACOSX)
   DCHECK(thread_checker_.CalledOnValidThread());
   worker_pool_->PostTask(
       FROM_HERE,
       base::Bind(&UploadList::RequestSingleCrashUpload, this, local_id));
-#endif
 }
 
 void UploadList::RequestSingleCrashUpload(const std::string& local_id) {
-  // Manual uploads for not uploaded crash reports are not available for non
-  // crashpad systems.
+  // Manual uploads for not yet uploaded crash reports are only available for
+  // Crashpad systems or on Android.
   NOTREACHED();
 }