[Bindings] Create and use V8 context snapshots

third_party/WebKit/Source/bindings/modules/v8/BUILD.gn

Index: third_party/WebKit/Source/bindings/modules/v8/BUILD.gn
diff --git a/third_party/WebKit/Source/bindings/modules/v8/BUILD.gn b/third_party/WebKit/Source/bindings/modules/v8/BUILD.gn
index 82d9b97d2e6a11b48e22f0828c5097b5ce560bf7..757f045d6a90b2ab6e0a5a48c5ce49d182854884 100644
--- a/third_party/WebKit/Source/bindings/modules/v8/BUILD.gn
+++ b/third_party/WebKit/Source/bindings/modules/v8/BUILD.gn
@@ -13,6 +13,7 @@ group("bindings_modules_generated") {
   public_deps = [
     ":bindings_modules_impl_generated",
     ":bindings_modules_v8_generated_init_partial",
+    ":bindings_v8_generated_snapshot",
     ":generate_bindings_modules_v8_interfaces",
     ":generate_bindings_modules_v8_partial_interfaces",
   ]
@@ -68,3 +69,11 @@ action("bindings_modules_v8_generated_init_partial") {
     "//third_party/WebKit/Source/bindings/modules:interfaces_info",
   ]
 }
+
+idl_snapshot("bindings_v8_generated_snapshot") {
+  sources = core_idl_files + core_idl_with_modules_dependency_files +
+            modules_definition_idl_files
+  target_component = "modules"
+  outputs = bindings_generated_snapshot_files
+  output_dir = bindings_modules_v8_output_dir
+}