Stack sampling profiler: set process and thread information

components/metrics/call_stack_profile_collector.cc

 // 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.
 
 #include "components/metrics/call_stack_profile_collector.h"
 
 #include "base/memory/ptr_util.h"
 #include "components/metrics/call_stack_profile_metrics_provider.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace metrics {
 
-CallStackProfileCollector::CallStackProfileCollector() {}
+CallStackProfileCollector::CallStackProfileCollector(
+    CallStackProfileParams::Process expected_process)
+    : expected_process_(expected_process) {}
 
 CallStackProfileCollector::~CallStackProfileCollector() {}
 
 // static
 void CallStackProfileCollector::Create(
+    CallStackProfileParams::Process expected_process,
     mojom::CallStackProfileCollectorRequest request) {
-  mojo::MakeStrongBinding(base::MakeUnique<CallStackProfileCollector>(),
-                          std::move(request));
+  mojo::MakeStrongBinding(
+      base::MakeUnique<CallStackProfileCollector>(expected_process),
+      std::move(request));
 }
 
 void CallStackProfileCollector::Collect(
     const CallStackProfileParams& params,
     base::TimeTicks start_timestamp,
     const std::vector<CallStackProfile>& profiles) {
+  if (params.process != expected_process_)
+    return;
+
   CallStackProfileMetricsProvider::ReceiveCompletedProfiles(params,
                                                             start_timestamp,
                                                             profiles);
 }
 
 }  // namespace metrics