[Bindings] Declare signature and executionContext once

third_party/WebKit/Source/bindings/templates/methods.cpp.tmpl

Index: third_party/WebKit/Source/bindings/templates/methods.cpp.tmpl
diff --git a/third_party/WebKit/Source/bindings/templates/methods.cpp.tmpl b/third_party/WebKit/Source/bindings/templates/methods.cpp.tmpl
index 2dbda1416c78df2807af4184a0714c794f6f66b0..266b360b108d305ce89987d631c09a3da1ec947a 100644
--- a/third_party/WebKit/Source/bindings/templates/methods.cpp.tmpl
+++ b/third_party/WebKit/Source/bindings/templates/methods.cpp.tmpl
@@ -643,10 +643,6 @@ V8DOMConfiguration::installMethod(isolate, world, {{instance_template}}, {{proto
 {######################################}
 {% macro install_conditionally_enabled_methods() %}
 {% if methods | conditionally_exposed(is_partial) %}
-{# Define operations with limited exposure #}
-v8::Local<v8::Signature> signature = v8::Signature::New(isolate, interfaceTemplate);
-ExecutionContext* executionContext = toExecutionContext(prototypeObject->CreationContext());
-DCHECK(executionContext);
 {% for method in methods | conditionally_exposed(is_partial) %}
 {% filter secure_context(method.overloads.secure_context_test_all
                          if method.overloads else