Introduce mojo interface for collecting StackSamplingProfiler data

components/metrics/BUILD.gn

 # Copyright 2014 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.
 
+import("//mojo/public/tools/bindings/mojom.gni")
+
 declare_args() {
   # Overrides os name in uma metrics log to "Blimp".
   metrics_use_blimp = false
 }
 
 # These are only used by the blimp team, which has entirely migrated to gn,
 # so this logic is not replicated in the gyp file.
 if (metrics_use_blimp) {
   defines = [ "OVERRIDE_OS_NAME_TO_BLIMP" ]
 }
@@ skipping 61 matching lines @@
     "system_memory_stats_recorder_linux.cc",
     "system_memory_stats_recorder_win.cc",
     "url_constants.cc",
     "url_constants.h",
   ]
 
   public_deps = [
     "//components/metrics/proto",
   ]
   deps = [
+    ":mojo_bindings",
     "//base",
     "//base:base_static",
     "//components/prefs",
     "//components/variations",
     "//third_party/zlib:compression_utils",
   ]
 
   if (is_chromeos) {
     deps += [ ":serialization" ]
   }
 
   if (is_mac) {
     libs = [
       # The below are all needed for drive_metrics_provider_mac.mm.
       "CoreFoundation.framework",
       "DiskArbitration.framework",
       "Foundation.framework",
       "IOKit.framework",
     ]
   }
 
   if (is_win) {
     sources -= [ "machine_id_provider_stub.cc" ]
   }
 }
 
+mojom("mojo_bindings") {
+  sources = [
+    "call_stack_profile_collector.mojom",
+  ]
+
+  deps = [
+    "//mojo/common:common_custom_types",
+  ]
+
+  public_deps = [
+    "//skia/public/interfaces",
+  ]
+}
+
 if (!is_ios) {
   # GYP version: components/metrics.gypi:metrics_gpu
   static_library("gpu") {
     sources = [
       "gpu/gpu_metrics_provider.cc",
       "gpu/gpu_metrics_provider.h",
     ]
 
     public_deps = [
       ":metrics",
@@ skipping 146 matching lines @@
       "serialization/metric_sample.h",
       "serialization/serialization_utils.cc",
       "serialization/serialization_utils.h",
     ]
     deps = [
       "//base",
     ]
   }
 }
 
+mojom("mojo_test_bindings") {
+  sources = [
+    "call_stack_profile_collector_test.mojom",
+  ]
+
+  deps = [
+    ":mojo_bindings",
+    "//mojo/common:common_custom_types",
+  ]
+}
+
 source_set("unit_tests") {
   testonly = true
   sources = [
+    "call_stack_profile_collector_test.mojom",
     "call_stack_profile_metrics_provider_unittest.cc",
+    "call_stack_profile_struct_traits_unittest.cc",
     "cloned_install_detector_unittest.cc",
     "daily_event_unittest.cc",
     "data_use_tracker_unittest.cc",
     "drive_metrics_provider_unittest.cc",
     "file_metrics_provider_unittest.cc",
     "histogram_encoder_unittest.cc",
     "machine_id_provider_win_unittest.cc",
     "metrics_log_manager_unittest.cc",
     "metrics_log_unittest.cc",
     "metrics_reporting_scheduler_unittest.cc",
     "metrics_service_unittest.cc",
     "metrics_state_manager_unittest.cc",
     "net/net_metrics_log_uploader_unittest.cc",
     "persisted_logs_unittest.cc",
     "profiler/profiler_metrics_provider_unittest.cc",
     "profiler/tracking_synchronizer_unittest.cc",
     "stability_metrics_helper_unittest.cc",
     "ui/screen_info_metrics_provider_unittest.cc",
   ]
 
   deps = [
     ":metrics",
+    ":mojo_test_bindings",
     ":net",
     ":profiler",
     ":test_support",
     ":ui",
     "//base/test:test_support",
     "//components/prefs:test_support",
     "//components/variations",
     "//net:test_support",
     "//testing/gtest",
     "//third_party/zlib:compression_utils",
     "//ui/gfx/geometry",
   ]
 
   if (is_linux) {
     sources += [ "serialization/serialization_utils_unittest.cc" ]
     deps += [ ":serialization" ]
   }
 
   if (is_chromeos) {
     deps += [ "leak_detector:unit_tests" ]
   }
 }