Revert of [Bindings] Create and use V8 context snapshots

tools/v8_context_snapshot/BUILD.gn

Index: tools/v8_context_snapshot/BUILD.gn
diff --git a/tools/v8_context_snapshot/BUILD.gn b/tools/v8_context_snapshot/BUILD.gn
deleted file mode 100644
index 57c22e481eaef6c7a92e0f9838aeaded691160b0..0000000000000000000000000000000000000000
--- a/tools/v8_context_snapshot/BUILD.gn
+++ /dev/null
@@ -1,97 +0,0 @@
-# Copyright 2017 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.
-
-# Targets in ths file are to take a V8 context snapshot on build time.
-# Created V8 context snapshot is used in
-# third_party/WebKit/Source/bindings/core/v8/V8ContextSnapshot.{cpp|h}.
-# to speedup creating a V8 context and setting up around it.
-
-import("//build/config/c++/c++.gni")
-import("//v8/snapshot_toolchain.gni")
-
-if (is_android) {
-  import("//build/config/android/rules.gni")
-}
-
-if (is_android) {
-  android_assets("v8_context_snapshot_assets") {
-    deps = [
-      ":v8_context_snapshot",
-    ]
-    sources = [
-      "$root_out_dir/v8_context_snapshot.bin",
-    ]
-    disable_compression = true
-  }
-}
-
-group("v8_context_snapshot") {
-  if (!is_chromeos) {
-    public_deps = [
-      ":generate_v8_context_snapshot",
-    ]
-  }
-}
-
-if (!is_chromeos && !is_android) {
-  action("generate_v8_context_snapshot") {
-    script = "run.py"
-    output_file = "$root_out_dir/v8_context_snapshot.bin"
-    output_path = rebase_path(output_file, root_build_dir)
-
-    args = [
-      "./" + rebase_path(
-              get_label_info(
-                      ":v8_context_snapshot_generator($v8_snapshot_toolchain)",
-                      "root_out_dir") + "/v8_context_snapshot_generator",
-              root_build_dir),
-      "--output_file=$output_path",
-    ]
-
-    outputs = [
-      output_file,
-    ]
-
-    deps = [
-      ":v8_context_snapshot_generator($v8_snapshot_toolchain)",
-    ]
-  }
-
-  # This config disables a link time optimization "ICF", which may merge different
-  # functions into one if the function signature and body of them are identical.
-  #
-  # ICF breaks 1:1 mappings of the external references for V8 snapshot, so we
-  # disable it while taking a V8 snapshot.
-  config("disable_icf") {
-    visibility = [ ":*" ]  # Only targets in this file can depend on this.
-    if (is_win) {
-      ldflags = [ "/OPT:NOICF" ]
-    } else if (is_posix && !is_mac) {
-      ldflags = [ "-Wl,--icf=none" ]
-    }
-  }
-
-  executable("v8_context_snapshot_generator") {
-    sources = [
-      "v8_context_snapshot_generator.cc",
-    ]
-
-    deps = [
-      "//gin:gin",
-      "//mojo/edk/system:system",
-      "//third_party/WebKit/public:blink",
-      "//v8",
-    ]
-
-    if (is_linux && (is_component_build || using_sanitizer) &&
-        use_custom_libcxx) {
-      deps += [ "//buildtools/third_party/libc++:libc++" ]
-    }
-
-    configs += [
-      "//v8:external_startup_data",
-      ":disable_icf",
-    ]
-  }
-}