Issue #2101 - Part 3: Update libyuv

Updated to version 1861, git revision 88b050f337cc0ca2a51800fe7bf4737222c87344 from
https://chromium.googlesource.com/libyuv/libyuv/

media/libyuv/build_overrides/build.gni

@@ -6,10 +6,55 @@
 # in the file PATENTS. All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
-# Using same overrides as WebRTC
-# See https://bugs.chromium.org/p/webrtc/issues/detail?id=5453.
-# Some WebRTC targets require the 10.7 deployment version of the Mac SDK and a
-# 10.11 min SDK but those targets are only used in non-Chromium builds. We can
-# remove this when Chromium drops 10.6 support and also requires 10.7.
-mac_sdk_min_build_override = "10.11"
-mac_deployment_target_build_override = "10.7"
+# Variable that can be used to support multiple build scenarios, like having
+# Chromium specific targets in a client project's GN file etc.
+build_with_chromium = false
+
+# Some non-Chromium builds don't support building java targets.
+enable_java_templates = true
+
+# Allow using custom suppressions files (currently not used by libyuv).
+asan_suppressions_file = "//build/sanitizers/asan_suppressions.cc"
+lsan_suppressions_file = "//build/sanitizers/lsan_suppressions.cc"
+tsan_suppressions_file = "//build/sanitizers/tsan_suppressions.cc"
+
+msan_blacklist_path =
+    rebase_path("//tools_libyuv/msan/blacklist.txt", root_build_dir)
+ubsan_blacklist_path =
+    rebase_path("//tools_libyuv/ubsan/blacklist.txt", root_build_dir)
+ubsan_vptr_blacklist_path =
+    rebase_path("//tools_libyuv/ubsan/vptr_blacklist.txt", root_build_dir)
+
+# For Chromium, Android 32-bit non-component, non-clang builds hit a 4GiB size
+# limit, making them requiring symbol_level=2. WebRTC doesn't hit that problem
+# so we just ignore that assert. See https://crbug.com/648948 for more info.
+ignore_elf32_limitations = true
+
+# Use bundled hermetic Xcode installation maintained by Chromium,
+# except for local iOS builds where it is unsupported.
+if (host_os == "mac") {
+  _result = exec_script("//build/mac/should_use_hermetic_xcode.py",
+                        [ target_os ],
+                        "value")
+  assert(_result != 2,
+         "Do not allow building targets with the default" +
+             "hermetic toolchain if the minimum OS version is not met.")
+  use_system_xcode = _result == 0
+}
+
+declare_args() {
+  # Tracing support requires //third_party/perfetto.
+  enable_base_tracing = false
+  use_perfetto_client_library = false
+
+  # Limits the defined //third_party/android_deps targets to only "buildCompile"
+  # and "buildCompileNoDeps" targets. This is useful for third-party
+  # repositories which do not use JUnit tests. For instance,
+  # limit_android_deps == true removes "gn gen" requirement for
+  # //third_party/robolectric .
+  limit_android_deps = false
+
+  # Allows googletest to pretty-print various absl types.
+  # Defined here rather than in gtest.gni to match chromium.
+  gtest_enable_absl_printers = true
+}