[Android] Switch instrumentation tests to generated device isolates.

build/config/android/rules.gni

 # Copyright 2014 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/android/internal_rules.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/toolchain/toolchain.gni")
 
 assert(is_android)
@@ skipping 2229 matching lines @@
   #       "android/org/chromium/foo/FooTestCase.java",
   #       "android/org/chromium/foo/FooExampleTest.java",
   #     ]
   #     deps = [
   #       ":foo_test_support_java"
   #     ]
   #   }
   template("instrumentation_test_apk") {
     testonly = true
     _apk_target_name = "${target_name}__apk"
+    _gen_isolate_target_name = "${target_name}__isolate"
     _test_runner_target_name = "${target_name}__test_runner_script"
     _install_script_name = "install_$target_name"
 
+    _target_dir_name = get_label_info(":$target_name", "dir")
+    _device_isolate_path = "$root_out_dir/gen.runtime/$_target_dir_name/$target_name.device.isolate"
+    device_isolate(_gen_isolate_target_name) {
+      forward_variables_from(invoker,
+                             [
+                               "data",
+                               "data_deps",
+                               "deps",
+                               "public_deps",
+                             ])
+      output = _device_isolate_path
+    }
+
+    if (defined(invoker.isolate_file)) {
+      assert(invoker.isolate_file != "")
+    }
+
     test_runner_script(_test_runner_target_name) {
       forward_variables_from(invoker,
                              [
                                "additional_apks",
                                "apk_under_test",
-                               "isolate_file",
                              ])
       test_name = invoker.target_name
       test_type = "instrumentation"
       apk_target = ":$_apk_target_name"
+      isolate_file = _device_isolate_path
+      deps = [
+        ":$_gen_isolate_target_name",
+      ]
     }
 
     test_runner_script("${_test_runner_target_name}_incremental") {
       forward_variables_from(invoker,
                              [
                                "additional_apks",
                                "apk_under_test",
-                               "isolate_file",
                              ])
       test_name = "${invoker.target_name}_incremental"
       test_type = "instrumentation"
       apk_target = ":$_apk_target_name"
       incremental_install = true
+      isolate_file = _device_isolate_path
+      deps = [
+        ":$_gen_isolate_target_name",
+      ]
     }
 
     android_apk(_apk_target_name) {
       deps = []
       data_deps = []
       forward_variables_from(invoker, "*")
       install_script_name = _install_script_name
       deps += [ "//testing/android/broker:broker_java" ]
       data_deps += [
         "//testing/android/driver:driver_apk",
@@ skipping 389 matching lines @@
         supports_android = true
         jar_path = "${_output_path}/$jar"
       }
     }
 
     java_group(target_name) {
       deps = _resource_targets + _jar_targets
     }
   }
 }