Rename |imp| => |impl| in bindings generation

Source/bindings/templates/attributes.cpp

 {##############################################################################}
 {% macro attribute_getter(attribute, world_suffix) %}
 {% filter conditional(attribute.conditional_string) %}
 static void {{attribute.name}}AttributeGetter{{world_suffix}}(
 {%- if attribute.is_expose_js_accessors %}
 const v8::FunctionCallbackInfo<v8::Value>& info
 {%- else %}
 const v8::PropertyCallbackInfo<v8::Value>& info
 {%- endif %})
 {
     {% if attribute.is_reflect and not attribute.is_url and
           attribute.idl_type == 'DOMString' and is_node %}
     {% set cpp_class, v8_class = 'Element', 'V8Element' %}
     {% endif %}
-    {# imp #}
+    {# impl #}
     {# FIXME: use a local variable for holder more often and simplify below #}
     {% if attribute.is_unforgeable or
           interface_name == 'Window' and attribute.idl_type == 'EventHandler' %}
     {% if interface_name == 'Window' %}
     v8::Handle<v8::Object> holder = info.Holder();
     {% else %}{# perform lookup first #}
     {# FIXME: can we remove this lookup? #}
     v8::Handle<v8::Object> holder = {{v8_class}}::findInstanceInPrototypeChain(info.This(), info.GetIsolate());
     if (holder.IsEmpty())
         return;
     {% endif %}{# Window #}
-    {{cpp_class}}* imp = {{v8_class}}::toNative(holder);
+    {{cpp_class}}* impl = {{v8_class}}::toNative(holder);
     {% elif attribute.cached_attribute_validation_method %}
     v8::Handle<v8::String> propertyName = v8AtomicString(info.GetIsolate(), "{{attribute.name}}");
-    {{cpp_class}}* imp = {{v8_class}}::toNative(info.Holder());
-    if (!imp->{{attribute.cached_attribute_validation_method}}()) {
+    {{cpp_class}}* impl = {{v8_class}}::toNative(info.Holder());
+    if (!impl->{{attribute.cached_attribute_validation_method}}()) {
         v8::Handle<v8::Value> jsValue = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), propertyName);
         if (!jsValue.IsEmpty()) {
             v8SetReturnValue(info, jsValue);
             return;
         }
     }
     {% elif not (attribute.is_static or attribute.is_unforgeable) %}
-    {{cpp_class}}* imp = {{v8_class}}::toNative(info.Holder());
+    {{cpp_class}}* impl = {{v8_class}}::toNative(info.Holder());
     {% endif %}
     {% if attribute.is_implemented_by and not attribute.is_static %}
-    ASSERT(imp);
+    ASSERT(impl);
     {% endif %}
     {% if interface_name == 'Window' and attribute.idl_type == 'EventHandler' %}
-    if (!imp->document())
+    if (!impl->document())
         return;
     {% endif %}
     {# Local variables #}
     {% if attribute.is_call_with_execution_context %}
     ExecutionContext* scriptContext = currentExecutionContext(info.GetIsolate());
     {% endif %}
     {% if attribute.is_check_security_for_node or
           attribute.is_getter_raises_exception %}
     ExceptionState exceptionState(ExceptionState::GetterContext, "{{attribute.name}}", "{{interface_name}}", info.Holder(), info.GetIsolate());
     {% endif %}
@@ skipping 161 matching lines @@
     {% endif %}
     {% if attribute.has_strict_type_checking %}
     {# Type checking for interface types (if interface not implemented, throw
        TypeError), per http://www.w3.org/TR/WebIDL/#es-interface #}
     if (!isUndefinedOrNull(jsValue) && !V8{{attribute.idl_type}}::hasInstance(jsValue, info.GetIsolate())) {
         exceptionState.throwTypeError("The provided value is not of type '{{attribute.idl_type}}'.");
         exceptionState.throwIfNeeded();
         return;
     }
     {% endif %}
-    {# imp #}
+    {# impl #}
     {% if attribute.put_forwards %}
-    {{cpp_class}}* proxyImp = {{v8_class}}::toNative(info.Holder());
-    RefPtr<{{attribute.idl_type}}> imp = WTF::getPtr(proxyImp->{{attribute.name}}());
-    if (!imp)
+    {{cpp_class}}* proxyImpl = {{v8_class}}::toNative(info.Holder());
+    RefPtr<{{attribute.idl_type}}> impl = WTF::getPtr(proxyImpl->{{attribute.name}}());
+    if (!impl)
         return;
     {% elif not attribute.is_static %}
-    {{cpp_class}}* imp = {{v8_class}}::toNative(info.Holder());
+    {{cpp_class}}* impl = {{v8_class}}::toNative(info.Holder());
     {% endif %}
     {% if attribute.is_implemented_by and not attribute.is_static %}
-    ASSERT(imp);
+    ASSERT(impl);
     {% endif %}
     {% if attribute.idl_type == 'EventHandler' and interface_name == 'Window' %}
-    if (!imp->document())
+    if (!impl->document())
         return;
     {% endif %}
     {# Convert JS value to C++ value #}
     {% if attribute.idl_type != 'EventHandler' %}
     {{attribute.v8_value_to_local_cpp_value}};
     {% elif not is_node %}{# EventHandler hack #}
     moveEventListenerToNewWrapper(info.Holder(), {{attribute.event_handler_getter_expression}}, jsValue, {{v8_class}}::eventListenerCacheIndex, info.GetIsolate());
     {% endif %}
     {% if attribute.enum_validation_expression %}
     {# Setter ignores invalid enum values: http://www.w3.org/TR/WebIDL/#idl-enums #}
@@ skipping 58 matching lines @@
     {% endif %}
     {% if attribute.has_custom_setter %}
     {{v8_class}}::{{attribute.name}}AttributeSetterCustom(jsValue, info);
     {% else %}
     {{cpp_class}}V8Internal::{{attribute.name}}AttributeSetter{{world_suffix}}(jsValue, info);
     {% endif %}
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 {% endfilter %}
 {% endmacro %}