Add process lifetime annotations to stack samples.

components/metrics/call_stack_profile_metrics_provider.cc

Index: components/metrics/call_stack_profile_metrics_provider.cc
diff --git a/components/metrics/call_stack_profile_metrics_provider.cc b/components/metrics/call_stack_profile_metrics_provider.cc
index 3dc55b9ea6d00f0a571cd4bcbb528867f03f6a9f..d704a0645b466bf342ce4026cc735e867b991dfd 100644
--- a/components/metrics/call_stack_profile_metrics_provider.cc
+++ b/components/metrics/call_stack_profile_metrics_provider.cc
@@ -220,7 +220,7 @@ void CopySampleToProto(
     const StackSamplingProfiler::Sample& sample,
     const std::vector<StackSamplingProfiler::Module>& modules,
     CallStackProfile::Sample* proto_sample) {
-  for (const StackSamplingProfiler::Frame& frame : sample) {
+  for (const StackSamplingProfiler::Frame& frame : sample.frames) {
     CallStackProfile::Entry* entry = proto_sample->add_entry();
     // A frame may not have a valid module. If so, we can't compute the
     // instruction pointer offset, and we don't want to send bare pointers, so
@@ -247,11 +247,21 @@ void CopyProfileToProto(
   if (ordering_spec == CallStackProfileParams::PRESERVE_ORDER) {
     // Collapse only consecutive repeated samples together.
     CallStackProfile::Sample* current_sample_proto = nullptr;
+    int32_t phases = 0;
+    int32_t activities = 0;
     for (auto it = profile.samples.begin(); it != profile.samples.end(); ++it) {
       if (!current_sample_proto || *it != *(it - 1)) {
         current_sample_proto = proto_profile->add_sample();
         CopySampleToProto(*it, profile.modules, current_sample_proto);
         current_sample_proto->set_count(1);
+        if (it->process_phases != phases) {
+          phases = it->process_phases;
+          current_sample_proto->set_process_phases(phases);
+        }
+        if (it->current_activities != activities) {
+          activities = it->current_activities;
+          current_sample_proto->set_current_activities(activities);
+        }
       } else {
         current_sample_proto->set_count(current_sample_proto->count() + 1);
       }