Reland Switch Android gtests to use generated wrapper scripts

scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_GN.json

Index: scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_GN.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_GN.json b/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_GN.json
index 13e93a10a935da3f858a539f6acd7ffd557ca14c..09d883662c1414a3e94da8c3d563bfc918af220a 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_GN.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_GN.json
@@ -573,14 +573,10 @@
     "cmd": [
       "python",
       "-u",
-      "[SLAVE_BUILD]/src/build/android/test_runner.py",
-      "gtest",
-      "-s",
-      "breakpad_unittests",
+      "[SLAVE_BUILD]/src/out/Release/bin/run_breakpad_unittests",
       "--blacklist-file",
       "[SLAVE_BUILD]/src/out/bad_devices.json",
       "--verbose",
-      "--release",
       "--isolate_file_path=[SLAVE_BUILD]/src/breakpad/breakpad_unittests.isolate",
       "--flakiness-dashboard-server=test-results.appspot.com",
       "--json-results-file",
@@ -588,7 +584,6 @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
-      "CHROMIUM_OUTPUT_DIR": "[SLAVE_BUILD]/src/out/Release",
       "PATH": "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools:[SLAVE_BUILD]/src/build/android:%(PATH)s"
     },
     "name": "breakpad_unittests"
@@ -597,21 +592,16 @@
     "cmd": [
       "python",
       "-u",
-      "[SLAVE_BUILD]/src/build/android/test_runner.py",
-      "gtest",
-      "-s",
-      "sandbox_linux_unittests",
+      "[SLAVE_BUILD]/src/out/Release/bin/run_sandbox_linux_unittests",
       "--blacklist-file",
       "[SLAVE_BUILD]/src/out/bad_devices.json",
       "--verbose",
-      "--release",
       "--flakiness-dashboard-server=test-results.appspot.com",
       "--json-results-file",
       "/path/to/tmp/json"
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
-      "CHROMIUM_OUTPUT_DIR": "[SLAVE_BUILD]/src/out/Release",
       "PATH": "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools:[SLAVE_BUILD]/src/build/android:%(PATH)s"
     },
     "name": "sandbox_linux_unittests"