chore: move the view APIs to their own directory (#14722)

* chore: move the view APIs to their own directory

* move view api cpp files

atom/browser/api/views/atom_api_button.cc

@@ -0,0 +1,58 @@
+// Copyright (c) 2018 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/views/atom_api_button.h"
+
+#include "atom/common/api/constructor.h"
+#include "native_mate/dictionary.h"
+
+#include "atom/common/node_includes.h"
+
+namespace atom {
+
+namespace api {
+
+Button::Button(views::Button* button) : View(button) {
+  view()->set_owned_by_client();
+}
+
+Button::~Button() {}
+
+void Button::ButtonPressed(views::Button* sender, const ui::Event& event) {
+  Emit("click");
+}
+
+// static
+mate::WrappableBase* Button::New(mate::Arguments* args) {
+  args->ThrowError("Button can not be created directly");
+  return nullptr;
+}
+
+// static
+void Button::BuildPrototype(v8::Isolate* isolate,
+                            v8::Local<v8::FunctionTemplate> prototype) {
+  prototype->SetClassName(mate::StringToV8(isolate, "Button"));
+}
+
+}  // namespace api
+
+}  // namespace atom
+
+namespace {
+
+using atom::api::Button;
+
+void Initialize(v8::Local<v8::Object> exports,
+                v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context,
+                void* priv) {
+  v8::Isolate* isolate = context->GetIsolate();
+  mate::Dictionary dict(isolate, exports);
+  dict.Set("Button",
+           mate::CreateConstructor<Button>(isolate, base::Bind(&Button::New)));
+}
+
+}  // namespace
+
+NODE_BUILTIN_MODULE_CONTEXT_AWARE(atom_browser_button, Initialize)