Sketch new SkyView interface to the engine

The SkyView interface will replace WebView as the interface to the SkyEngine.
The SkyView interface won't have a root level Document or Frame object but
instead will implement the base layers of the framework.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/1135013006

engine/BUILD.gn

@@ -69,7 +69,8 @@ config("non_test_config") {
 
 group("engine") {
   deps = [
-    "//sky/engine/web",
     "//sky/engine/platform",
+    "//sky/engine/public/sky",
+    "//sky/engine/web",
   ]
 }

engine/public/sky/BUILD.gn

@@ -0,0 +1,23 @@
+# Copyright 2015 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.
+
+source_set("sky") {
+  deps = [
+    "//skia",
+    "//sky/engine/core",
+    "//sky/engine/platform",
+  ]
+
+  configs += [
+    "//sky/engine:config",
+    "//sky/engine:inside_blink",
+    "//sky/engine:non_test_config",
+  ]
+
+  sources = [
+    "sky_display_metrics.h",
+    "sky_view.cc",
+    "sky_view.h",
+  ]
+}

engine/public/sky/sky_display_metrics.h

@@ -0,0 +1,19 @@
+// Copyright 2015 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.
+
+#ifndef SKY_ENGINE_PUBLIC_SKY_SKY_DISPLAY_METRICS_H_
+#define SKY_ENGINE_PUBLIC_SKY_SKY_DISPLAY_METRICS_H_
+
+#include "sky/engine/public/platform/WebSize.h"
+
+namespace blink {
+
+struct SkyDisplayMetrics {
+  WebSize size;
+  float device_pixel_ratio;
+};
+
+} // namespace blink
+
+#endif  // SKY_ENGINE_PUBLIC_SKY_SKY_DISPLAY_METRICS_H_

engine/public/sky/sky_view.cc

@@ -0,0 +1,34 @@
+// Copyright 2015 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 "config.h"
+#include "sky/engine/public/sky/sky_view.h"
+
+namespace blink {
+
+std::unique_ptr<SkyView> SkyView::Create() {
+  return std::unique_ptr<SkyView>(new SkyView);
+}
+
+SkyView::SkyView() {
+}
+
+SkyView::~SkyView() {
+}
+
+void SkyView::SetDisplayMetrics(const SkyDisplayMetrics& metrics) {
+}
+
+void SkyView::Load(const WebURL& url) {
+}
+
+skia::RefPtr<SkPicture> SkyView::Paint() {
+  return skia::RefPtr<SkPicture>();
+}
+
+bool SkyView::HandleInputEvent(const WebInputEvent& event) {
+  return false;
+}
+
+} // namespace blink

engine/public/sky/sky_view.h

@@ -0,0 +1,34 @@
+// Copyright 2015 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.
+
+#ifndef SKY_ENGINE_PUBLIC_SKY_SKY_VIEW_H_
+#define SKY_ENGINE_PUBLIC_SKY_SKY_VIEW_H_
+
+#include <memory>
+#include "skia/ext/refptr.h"
+#include "sky/engine/public/platform/WebCommon.h"
+#include "sky/engine/public/platform/WebURL.h"
+#include "sky/engine/public/sky/sky_display_metrics.h"
+#include "third_party/skia/include/core/SkPicture.h"
+
+namespace blink {
+class WebInputEvent;
+
+class SkyView {
+ public:
+  static std::unique_ptr<SkyView> Create();
+  ~SkyView();
+
+  void SetDisplayMetrics(const SkyDisplayMetrics& metrics);
+  void Load(const WebURL& url);
+  skia::RefPtr<SkPicture> Paint();
+  bool HandleInputEvent(const WebInputEvent& event);
+
+ private:
+  SkyView();
+};
+
+} // namespace blink
+
+#endif  // SKY_ENGINE_PUBLIC_SKY_SKY_VIEW_H_