Delete all test isolate file.

content/content_browsertests_apk.isolate

Index: content/content_browsertests_apk.isolate
diff --git a/content/content_browsertests_apk.isolate b/content/content_browsertests_apk.isolate
deleted file mode 100644
index 1452eb073317996d27197d3f5a767cc93e8f70f5..0000000000000000000000000000000000000000
--- a/content/content_browsertests_apk.isolate
+++ /dev/null
@@ -1,29 +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',
-    '../net/tools/testserver/testserver.isolate',
-    'content_browsertests.isolate',
-  ],
-  'variables': {
-    'command': [
-      '<(PRODUCT_DIR)/bin/run_content_browsertests',
-      '--logcat-output-dir', '${ISOLATED_OUTDIR}/logcats',
-      '-v',
-    ],
-    'files': [
-      '../base/base.isolate',
-      '../build/config/',
-      '../gin/v8.isolate',
-      '../third_party/angle/angle.isolate',
-      '../third_party/icu/icu.isolate',
-      '../third_party/instrumented_libraries/instrumented_libraries.isolate',
-      '../ui/gl/gl.isolate',
-      '<(PRODUCT_DIR)/bin/run_content_browsertests',
-      '<(PRODUCT_DIR)/content_browsertests_apk/',
-      'content_browsertests.isolate',
-    ]
-  },
-}