Implement frame attribution (FrameBlamer)

base/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.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 239 matching lines @@
     "containers/small_map.h",
     "containers/stack_container.h",
     "cpu.cc",
     "cpu.h",
     "critical_closure.h",
     "critical_closure_internal_ios.mm",
     "debug/alias.cc",
     "debug/alias.h",
     "debug/asan_invalid_access.cc",
     "debug/asan_invalid_access.h",
+    "debug/blame_context.h",
     "debug/close_handle_hook_win.cc",
     "debug/close_handle_hook_win.h",
     "debug/crash_logging.cc",
     "debug/crash_logging.h",
     "debug/debugger.cc",
     "debug/debugger.h",
     "debug/debugger_posix.cc",
     "debug/debugger_win.cc",
     "debug/dump_without_crashing.cc",
     "debug/dump_without_crashing.h",
@@ skipping 1297 matching lines @@
     "cancelable_callback_unittest.cc",
     "command_line_unittest.cc",
     "containers/adapters_unittest.cc",
     "containers/hash_tables_unittest.cc",
     "containers/linked_list_unittest.cc",
     "containers/mru_cache_unittest.cc",
     "containers/scoped_ptr_hash_map_unittest.cc",
     "containers/small_map_unittest.cc",
     "containers/stack_container_unittest.cc",
     "cpu_unittest.cc",
+    "debug/blame_context_unittest.cc",
     "debug/crash_logging_unittest.cc",
     "debug/debugger_unittest.cc",
     "debug/leak_tracker_unittest.cc",
     "debug/proc_maps_linux_unittest.cc",
     "debug/stack_trace_unittest.cc",
     "debug/task_annotator_unittest.cc",
     "deferred_sequenced_task_runner_unittest.cc",
     "environment_unittest.cc",
     "file_version_info_unittest.cc",
     "files/dir_reader_posix_unittest.cc",
@@ skipping 508 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }