Replace the gc extension in content shell with a gin::Wrappable class

content/shell/renderer/gc_controller.cc

Index: content/shell/renderer/gc_controller.cc
diff --git a/content/shell/renderer/gc_controller.cc b/content/shell/renderer/gc_controller.cc
new file mode 100644
index 0000000000000000000000000000000000000000..76fd40563316212fd303b645d706b1b4638d6988
--- /dev/null
+++ b/content/shell/renderer/gc_controller.cc
@@ -0,0 +1,55 @@
+// Copyright 2013 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.
+
+#include "content/shell/renderer/gc_controller.h"
+
+#include "gin/arguments.h"
+#include "gin/handle.h"
+#include "gin/object_template_builder.h"
+#include "third_party/WebKit/public/web/WebFrame.h"
+#include "third_party/WebKit/public/web/WebKit.h"
+#include "v8/include/v8.h"
+
+namespace content {
+
+gin::WrapperInfo GCController::kWrapperInfo = {gin::kEmbedderNativeGin};
+
+// static
+void GCController::Install(blink::WebFrame* frame) {
+  v8::Isolate* isolate = blink::mainThreadIsolate();
+  v8::HandleScope handle_scope(isolate);
+  v8::Handle<v8::Context> context = frame->mainWorldScriptContext();
+  if (context.IsEmpty())
+    return;
+
+  v8::Context::Scope context_scope(context);
+
+  gin::Handle<GCController> controller =
+      gin::CreateHandle(isolate, new GCController());
+  v8::Handle<v8::Object> global = context->Global();
+  global->Set(gin::StringToV8(isolate, "GCController"), controller.ToV8());
+}
+
+GCController::GCController() {}
+
+GCController::~GCController() {}
+
+gin::ObjectTemplateBuilder GCController::GetObjectTemplateBuilder(
+    v8::Isolate* isolate) {
+  return gin::Wrappable<GCController>::GetObjectTemplateBuilder(isolate)
+      .SetMethod("collect", &GCController::Collect)
+      .SetMethod("minorCollect", &GCController::MinorCollect);
+}
+
+void GCController::Collect(const gin::Arguments& args) {
+  args.isolate()->RequestGarbageCollectionForTesting(
+      v8::Isolate::kFullGarbageCollection);
+}
+
+void GCController::MinorCollect(const gin::Arguments& args) {
+  args.isolate()->RequestGarbageCollectionForTesting(
+      v8::Isolate::kMinorGarbageCollection);
+}
+
+}  // namespace content