Revert "Reland "[ar] Do not refer to ARCore shim in APK merger""

This reverts commit f3f5b838.

Reason for revert: Breaks official build: https://crbug.com/868258

Original change's description:
> Reland "[ar] Do not refer to ARCore shim in APK merger"
> 
> This is a reland of 58e4a081
> 
> Original change's description:
> > [ar] Do not refer to ARCore shim in APK merger
> > 
> > This hard-coding should no longer be required.
> > 
> > Bug: 839191
> > Change-Id: Id44f0f19da6efcee90ef79ea3e241eb2a7ea5843
> > Reviewed-on: https://chromium-review.googlesource.com/1147706
> > Commit-Queue: Ian Vollick <vollick@chromium.org>
> > Reviewed-by: Richard Coles <torne@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#577662}
> 
> Bug: 839191
> Change-Id: I42c3d31c0cbe49c1fe2d68c55d0db18dcdc3381d
> Reviewed-on: https://chromium-review.googlesource.com/1151567
> Reviewed-by: Richard Coles <torne@chromium.org>
> Commit-Queue: Ian Vollick <vollick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#578347}

TBR=vollick@chromium.org,torne@chromium.org

Change-Id: I1383b1330cb21619fe040ed420487fe33003101f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 839191, 868258
Reviewed-on: https://chromium-review.googlesource.com/1152274Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Commit-Queue: Bernhard Bauer <bauerb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578628}

android_webview/tools/apk_merger.py

@@ -37,12 +37,12 @@ BUILD_ANDROID_DIR = os.path.join(SRC_DIR, 'build', 'android')
 BUILD_ANDROID_GYP_DIR = os.path.join(BUILD_ANDROID_DIR, 'gyp')
 sys.path.append(BUILD_ANDROID_GYP_DIR)
 
-import finalize_apk # pylint: disable=import-error,wrong-import-position
-from util import build_utils # pylint: disable=import-error,wrong-import-position
+import finalize_apk # pylint: disable=import-error
+from util import build_utils # pylint: disable=import-error
 
 sys.path.append(BUILD_ANDROID_DIR)
 
-from pylib import constants  # pylint: disable=import-error,wrong-import-position
+from pylib import constants  # pylint: disable=import-error
 
 DEFAULT_ZIPALIGN_PATH = os.path.join(
     SRC_DIR, 'third_party', 'android_tools', 'sdk', 'build-tools',
@@ -87,7 +87,7 @@ def GetDiffFiles(dcmp, base_dir):
     copy_files.extend(
         GetNonDirFiles(os.path.join(dcmp.right, file_name), base_dir))
 
-  # we cannot merge APKs with files with similar names but different contents
+# we cannot merge APKs with files with similar names but different contents
   if len(dcmp.diff_files) > 0:
     raise ApkMergeFailure('found differing files: %s in %s and %s' %
                           (dcmp.diff_files, dcmp.left, dcmp.right))
@@ -117,6 +117,11 @@ def CheckFilesExpected(actual_files, expected_files, component_build):
   duplicate_file_set = set(
       f for f, n in actual_file_names.iteritems() if n > 1)
 
+  # TODO(crbug.com/839191): Remove this once we're plumbing the lib correctly.
+  missing_file_set = set(
+      f for f in missing_file_set if not os.path.basename(f) ==
+      'libarcore_sdk_c_minimal.so')
+
   errors = []
   if unexpected_file_set:
     errors.append(
@@ -172,6 +177,10 @@ def MergeApk(args, tmp_apk, tmp_dir_32, tmp_dir_64):
   if args.has_unwind_cfi:
     expected_files['unwind_cfi_32'] = False
 
+  # TODO(crbug.com/839191): we should pass this in via script arguments.
+  if not args.loadable_module_32:
+    args.loadable_module_32.append('libarcore_sdk_c_minimal.so')
+
   for f in args.loadable_module_32:
     expected_files[f] = not args.uncompress_shared_libraries
 

android_webview/tools/run_cts.py

@@ -104,15 +104,12 @@ def MergeTestResults(existing_results_json, additional_results_json):
     if k not in existing_results_json:
       existing_results_json[k] = v
     else:
-      if isinstance(v, dict):
-        if not isinstance(existing_results_json[k], dict):
-          raise NotImplementedError(
-              "Can't merge results field %s of different types" % v)
+      if type(v) != type(existing_results_json[k]):
+        raise NotImplementedError(
+            "Can't merge results field %s of different types" % v)
+      if type(v) is dict:
         existing_results_json[k].update(v)
-      elif isinstance(v, list):
-        if not isinstance(existing_results_json[k], list):
-          raise NotImplementedError(
-              "Can't merge results field %s of different types" % v)
+      elif type(v) is list:
         existing_results_json[k].extend(v)
       else:
         raise NotImplementedError(