IDL: Use ALLOW_ONLY_INLINE_ALLOCATION() in dictionaries

Source/bindings/templates/dictionary_v8.cpp

 // Copyright 2014 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.
 
 // This file has been auto-generated by {{code_generator}}. DO NOT MODIFY!
 
 #include "config.h"
 #include "{{v8_class}}.h"
 
 {% for filename in cpp_includes if filename != '%s.h' % v8_class %}
 #include "{{filename}}"
 {% endfor %}
 
 namespace blink {
 
-{{cpp_class}}* {{v8_class}}::toImpl(v8::Isolate* isolate, v8::Handle<v8::Value> v8Value, ExceptionState& exceptionState)
+void {{v8_class}}::toImpl(v8::Isolate* isolate, v8::Handle<v8::Value> v8Value, {{cpp_class}}& impl, ExceptionState& exceptionState)
 {
-    ASSERT(isUndefinedOrNull(v8Value) || v8Value->IsObject());
+    if (isUndefinedOrNull(v8Value))
+        return;
+    if (!v8Value->IsObject()) {
+        exceptionState.throwTypeError("cannot convert to dictionary.");
+        return;
+    }
 
-    {{cpp_class}}* impl = {{cpp_class}}::create();
     // FIXME: Do not use Dictionary and DictionaryHelper
     // https://crbug.com/321462
     Dictionary dictionary(v8Value, isolate);
     // FIXME: Remove this v8::TryCatch once the code is switched from
     // Dictionary/DictionaryHelper to something that uses ExceptionState.
     v8::TryCatch block;
     {% for member in members %}
     {{member.cpp_type}} {{member.name}};
     if (DictionaryHelper::getWithUndefinedOrNullCheck(dictionary, "{{member.name}}", {{member.name}})) {
     {% if member.enum_validation_expression %}
         String string = {{member.name}};
         if (!({{member.enum_validation_expression}})) {
             exceptionState.throwTypeError("member {{member.name}} ('" + string + "') is not a valid enum value.");
-            return 0;
+            return;
         }
     {% elif member.is_object %}
         if (!{{member.name}}.isObject()) {
             exceptionState.throwTypeError("member {{member.name}} is not an object.");
-            return 0;
+            return;
         }
     {% endif %}
-        impl->{{member.setter_name}}({{member.name}});
+        impl.{{member.setter_name}}({{member.name}});
     } else if (block.HasCaught()) {
         exceptionState.rethrowV8Exception(block.Exception());
-        return 0;
+        return;
     }
+
     {% endfor %}
-    return impl;
 }
 
-v8::Handle<v8::Value> toV8({{cpp_class}}* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
+v8::Handle<v8::Value> toV8({{cpp_class}}& impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     v8::Handle<v8::Object> v8Object = v8::Object::New(isolate);
     {% for member in members %}
-    if (impl->{{member.has_method_name}}()) {
+    if (impl.{{member.has_method_name}}()) {
         {% if member.is_object %}
-        ASSERT(impl->{{member.cpp_name}}().isObject());
+        ASSERT(impl.{{member.cpp_name}}().isObject());
         {% endif %}
         v8Object->Set(v8String(isolate, "{{member.name}}"), {{member.cpp_value_to_v8_value}});
     {% if member.v8_default_value %}
     } else {
         v8Object->Set(v8String(isolate, "{{member.name}}"), {{member.v8_default_value}});
     {% endif %}
     }
+
     {% endfor %}
     return v8Object;
 }
 
 } // namespace blink