[Android] Switch instrumentation tests to generated device isolates.

chrome/android/chrome_public_test_apk.isolate

Index: chrome/android/chrome_public_test_apk.isolate
diff --git a/chrome/android/chrome_public_test_apk.isolate b/chrome/android/chrome_public_test_apk.isolate
deleted file mode 100644
index c2c623a693c7f90b665616d130cdcb6abfc40eac..0000000000000000000000000000000000000000
--- a/chrome/android/chrome_public_test_apk.isolate
+++ /dev/null
@@ -1,27 +0,0 @@
-# Copyright 2015 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',
-    '../chrome_public_test_apk.isolate',
-  ],
-  'variables': {
-    'command': [
-      '<(PRODUCT_DIR)/bin/run_chrome_public_test_apk',
-      '--enable-platform-mode',
-      '-e', 'local',
-      '--logcat-output-dir', '${ISOLATED_OUTDIR}/logcats',
-    ],
-    'files': [
-      '../../third_party/proguard/',
-      '../chrome_public_test_apk.isolate',
-      '<(PRODUCT_DIR)/apks/ChromePublic.apk',
-      '<(PRODUCT_DIR)/apks/ChromePublicTest.apk',
-      '<(PRODUCT_DIR)/apks/ChromePublicTestSupport.apk',
-      '<(PRODUCT_DIR)/apks/ChromiumNetTestSupport.apk',
-      '<(PRODUCT_DIR)/bin/run_chrome_public_test_apk',
-      '<(PRODUCT_DIR)/test.lib.java/ChromePublicTest.jar',
-    ]
-  },
-}