[Android] Switch instrumentation tests to generated device isolates.

android_webview/system_webview_shell_layout_test_apk_run.isolate

Index: android_webview/system_webview_shell_layout_test_apk_run.isolate
diff --git a/android_webview/system_webview_shell_layout_test_apk_run.isolate b/android_webview/system_webview_shell_layout_test_apk_run.isolate
deleted file mode 100644
index b099a6b01454386372a1ed5f3bd4520c03468c36..0000000000000000000000000000000000000000
--- a/android_webview/system_webview_shell_layout_test_apk_run.isolate
+++ /dev/null
@@ -1,28 +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.
-{
-  'includes': [
-    '../build/android/android.isolate',
-  ],
-  'variables': {
-    'command': [
-      '<(PRODUCT_DIR)/bin/run_system_webview_shell_layout_test_apk',
-      '--enable-platform-mode',
-      '-e', 'local',
-      '--logcat-output-dir', '${ISOLATED_OUTDIR}/logcats',
-    ],
-    'files': [
-      '../third_party/proguard/lib/proguard.jar',
-      '<(PRODUCT_DIR)/host_forwarder',
-      '<(PRODUCT_DIR)/forwarder_dist/',
-      '<(PRODUCT_DIR)/apks/SystemWebView.apk',
-      '<(PRODUCT_DIR)/apks/SystemWebViewShell.apk',
-      '<(PRODUCT_DIR)/apks/SystemWebViewShellLayoutTest.apk',
-      '<(PRODUCT_DIR)/bin/run_system_webview_shell_layout_test_apk',
-      '<(PRODUCT_DIR)/test.lib.java/SystemWebViewShellLayoutTest.jar',
-      'system_webview_shell_test_apk.isolate',
-      'tools/WebViewShell/test/',
-    ]
-  },
-}