fix(crashlytics, ios): fix Crashlytics obfuscation for iOS on the Flutter side (#10566)

Author: themiswang

packages/firebase_crashlytics/firebase_crashlytics/lib/src/utils.dart

@@ -20,17 +20,13 @@ List<Map<String, String>> getStackTraceElements(StackTrace stackTrace) {
         // Crashlytics Console groups issues with same stack trace.
         // Obfuscated stack traces contains abs address, virt address
         // and symbol name + offset. abs addresses are different across
-        // sessions, so same error can create different issues in Console.
-        // We replace abs address with '0' so that Crashlytics Console can
-        // group same exceptions. Also we don't need abs addresses for
-        // deobfuscating, if we have virt address or symbol name + offset.
-        final String method = frame.member.replaceFirstMapped(
-            _obfuscatedStackTraceLineRegExp,
-            (match) => '${match.group(1)}0${match.group(3)}');
+        // sessions, Crashlytics is smart enough to group exceptions
+        // in the same issue. For iOS we use abs address for symbolication
+        // and for Android we use virt address.
         elements.add(<String, String>{
           'file': '',
           'line': '0',
-          'method': method,
+          'method': frame.member,
         });
       }
     } else {

packages/firebase_crashlytics/firebase_crashlytics/test/firebase_crashlytics_test.dart

@@ -266,7 +266,7 @@ void main() {
         expect(elements.length, 1);
         expect(elements.first, <String, String>{
           'method':
-              '    #00 abs 0 virt 00000000001af27b _kDartIsolateSnapshotInstructions+0x1a127b',
+              '    #00 abs 000075f17833027b virt 00000000001af27b _kDartIsolateSnapshotInstructions+0x1a127b',
           'file': '',
           'line': '0',
         });
@@ -286,7 +286,8 @@ void main() {
         final List<Map<String, String>> elements = getStackTraceElements(trace);
         expect(elements.length, 1);
         expect(elements.first, <String, String>{
-          'method': '    #00 abs 0 _kDartIsolateSnapshotInstructions+0x1a127b',
+          'method':
+              '    #00 abs 000075f17833027b _kDartIsolateSnapshotInstructions+0x1a127b',
           'file': '',
           'line': '0',
         });