tp: Support interned job names in Android track events (#5072)

This change adds support for interning job names in JobScheduler track
events. This ensures job names are interned in a buffer that is friendly
for PII filtering at the perfetto side.

Specifically, this adds the 'job_name_iid' field to the
AndroidJobSchedulerJob proto and updates the generated C headers.

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Author: sanath099

include/perfetto/public/protos/trace/android/android_track_event.pzc.h

@@ -920,6 +920,11 @@ PERFETTO_PB_FIELD(perfetto_protos_AndroidJobSchedulerJob,
                   int64_t,
                   job_state_flags,
                   20);
+PERFETTO_PB_FIELD(perfetto_protos_AndroidJobSchedulerJob,
+                  VARINT,
+                  uint64_t,
+                  job_name_iid,
+                  21);
 
 PERFETTO_PB_MSG(perfetto_protos_AndroidMessageQueue);
 PERFETTO_PB_FIELD(perfetto_protos_AndroidMessageQueue,

protos/perfetto/trace/android/android_track_event.proto

@@ -115,6 +115,8 @@ message AndroidJobSchedulerJob {
   optional int32 public_stop_reason = 19;
   // Bitfield of boolean states of the job.
   optional int64 job_state_flags = 20;
+  // Interned Job name.
+  optional uint64 job_name_iid = 21;
 }
 
 // Information about an android.graphics.Bitmap.

src/trace_processor/importers/proto/track_event_parser.cc

@@ -115,6 +115,20 @@ std::optional<base::Status> MaybeParseSourceLocation(
   return base::OkStatus();
 }
 
+std::optional<base::Status> MaybeParseAndroidJobName(
+    const protozero::Field& field,
+    util::ProtoToArgsParser::Delegate& delegate) {
+  auto* decoder = delegate.GetInternedMessage(
+      protos::pbzero::InternedData::kAndroidJobName, field.as_uint64());
+  if (!decoder) {
+    return std::nullopt;
+  }
+
+  delegate.AddString(util::ProtoToArgsParser::Key("job_scheduler_job.job_name"),
+                     decoder->name());
+  return base::OkStatus();
+}
+
 }  // namespace
 
 TrackEventParser::TrackEventParser(TraceProcessorContext* context,
@@ -253,6 +267,12 @@ TrackEventParser::TrackEventParser(TraceProcessorContext* context,
         return MaybeParseSourceLocation("chrome_memory_pressure_notification",
                                         field, delegate);
       });
+  args_parser_.AddParsingOverrideForField(
+      "job_scheduler_job.job_name_iid",
+      [](const protozero::Field& field,
+         util::ProtoToArgsParser::Delegate& delegate) {
+        return MaybeParseAndroidJobName(field, delegate);
+      });
 
   // Parse DebugAnnotations.
   args_parser_.AddParsingOverrideForType(