[tracing] Implement composable memory usage estimators.

base/test/BUILD.gn

 # Copyright (c) 2013 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("//build/config/allocator.gni")
 import("//build/config/ui.gni")
 import("//build/config/nacl/config.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
 static_library("test_config") {
   testonly = true
   sources = [
@@ skipping 53 matching lines @@
     "perf_time_logger.cc",
     "perf_time_logger.h",
     "power_monitor_test_base.cc",
     "power_monitor_test_base.h",
     "scoped_command_line.cc",
     "scoped_command_line.h",
     "scoped_feature_list.cc",
     "scoped_feature_list.h",
     "scoped_locale.cc",
     "scoped_locale.h",
+    "scoped_memory_usage.cc",
+    "scoped_memory_usage.h",
     "scoped_path_override.cc",
     "scoped_path_override.h",
     "sequenced_task_runner_test_template.cc",
     "sequenced_task_runner_test_template.h",
     "sequenced_worker_pool_owner.cc",
     "sequenced_worker_pool_owner.h",
     "simple_test_clock.cc",
     "simple_test_clock.h",
     "simple_test_tick_clock.cc",
     "simple_test_tick_clock.h",
@@ skipping 81 matching lines @@
     "//third_party/libxml",
   ]
 
   if (!is_posix) {
     sources -= [
       "scoped_locale.cc",
       "scoped_locale.h",
     ]
   }
 
+  if (!use_experimental_allocator_shim) {
+    sources -= [
+      "scoped_memory_usage.cc",
+      "scoped_memory_usage.h",
+    ]
+  }
+
   if (is_ios) {
     set_sources_assignment_filter([])
     sources += [ "test_file_util_mac.cc" ]
     set_sources_assignment_filter(sources_assignment_filter)
   }
 
   if (is_mac) {
     libs = [ "AppKit.framework" ]
   }
 
@@ skipping 128 matching lines @@
 if (is_android) {
   generate_jni("base_unittests_jni_headers") {
     sources = [
       "android/java/src/org/chromium/base/ContentUriTestUtils.java",
       "android/java/src/org/chromium/base/TestSystemMessageHandler.java",
       "android/java/src/org/chromium/base/TestUiThread.java",
     ]
     jni_package = "base"
   }
 }