Add process lifetime annotations to stack samples.

components/metrics/public/cpp/call_stack_profile_struct_traits.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Defines StructTraits specializations for translating between mojo types and
 // base::StackSamplingProfiler types, with data validity checks.
 
 #ifndef COMPONENTS_METRICS_CALL_STACK_PROFILE_STRUCT_TRAITS_H_
 #define COMPONENTS_METRICS_CALL_STACK_PROFILE_STRUCT_TRAITS_H_
 
@@ skipping 62 matching lines @@
     // We can't know whether the module_index field is valid at this point since
     // we don't have access to the number of modules here. This will be checked
     // in CallStackProfile's Read function below.
     *out = base::StackSamplingProfiler::Frame(data.instruction_pointer(),
                                               module_index);
     return true;
   }
 };
 
 template <>
+struct StructTraits<metrics::mojom::CallStackSampleDataView,
+                    base::StackSamplingProfiler::Sample> {
+  static const std::vector<base::StackSamplingProfiler::Frame>& frames(
+      const base::StackSamplingProfiler::Sample& sample) {
+    return sample.frames;
+  }
+  static int32_t process_phases(
+      const base::StackSamplingProfiler::Sample& sample) {
+    return sample.process_phases;
+  }
+  static int32_t current_activities(
+      const base::StackSamplingProfiler::Sample& sample) {
+    return sample.current_activities;
+  }
+
+  static bool Read(metrics::mojom::CallStackSampleDataView data,
+                   base::StackSamplingProfiler::Sample* out) {
+    std::vector<base::StackSamplingProfiler::Frame> frames;
+    if (!data.ReadFrames(&frames))
+      return false;
+
+    *out = base::StackSamplingProfiler::Sample();
+    out->frames = std::move(frames);
+    out->process_phases = data.process_phases();
+    out->current_activities = data.current_activities();
+    return true;
+  }
+};
+
+template <>
 struct StructTraits<metrics::mojom::CallStackProfileDataView,
                     base::StackSamplingProfiler::CallStackProfile> {
   static const std::vector<base::StackSamplingProfiler::Module>& modules(
       const base::StackSamplingProfiler::CallStackProfile& profile) {
     return profile.modules;
   }
   static const std::vector<base::StackSamplingProfiler::Sample>& samples(
       const base::StackSamplingProfiler::CallStackProfile& profile) {
     return profile.samples;
   }
   static const base::TimeDelta profile_duration(
       const base::StackSamplingProfiler::CallStackProfile& profile) {
     return profile.profile_duration;
   }
   static const base::TimeDelta sampling_period(
       const base::StackSamplingProfiler::CallStackProfile& profile) {
     return profile.sampling_period;
   }
 
   static bool ValidateSamples(
       std::vector<base::StackSamplingProfiler::Sample> samples,
       size_t module_count) {
     for (const base::StackSamplingProfiler::Sample& sample : samples) {
-      for (const base::StackSamplingProfiler::Frame& frame : sample) {
+      for (const base::StackSamplingProfiler::Frame& frame : sample.frames) {
         if (frame.module_index >= module_count &&
             frame.module_index !=
                 base::StackSamplingProfiler::Frame::kUnknownModuleIndex)
           return false;
       }
     }
     return true;
   }
 
   static bool Read(metrics::mojom::CallStackProfileDataView data,
@@ skipping 258 matching lines @@
             metrics::CallStackProfileParams::SampleOrderingSpec::PRESERVE_ORDER;
         return true;
     }
     return false;
   }
 };
 
 }  // mojo
 
 #endif  // COMPONENTS_METRICS_CALL_STACK_PROFILE_STRUCT_TRAITS_H_