Add a sample app that draws with Ganesh

examples/ganesh_app/painter.h

 // 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.
 
-#ifndef EXAMPLES_SURFACES_APP_CHILD_GL_IMPL_H_
-#define EXAMPLES_SURFACES_APP_CHILD_GL_IMPL_H_
+#ifndef EXAMPLES_GANESH_APP_PAINTER_H_
+#define EXAMPLES_GANESH_APP_PAINTER_H_
 
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_id_allocator.h"
-#include "examples/sample_app/spinning_cube.h"
 #include "examples/surfaces_app/child.mojom.h"
 #include "mojo/public/c/gles2/gles2.h"
-#include "mojo/public/cpp/bindings/string.h"
+#include "mojo/services/public/interfaces/geometry/geometry.mojom.h"
 #include "mojo/services/public/interfaces/surfaces/surface_id.mojom.h"
 #include "mojo/services/public/interfaces/surfaces/surfaces.mojom.h"
 #include "mojo/services/public/interfaces/surfaces/surfaces_service.mojom.h"
-#include "third_party/skia/include/core/SkColor.h"
+#include "skia/ext/refptr.h"
+#include "third_party/skia/include/gpu/GrContext.h"
 #include "ui/gfx/size.h"
 
-namespace cc {
-class CompositorFrame;
-}
-
 namespace mojo {
-
 class ApplicationConnection;
 
 namespace examples {
 
-// Simple example of a child app using surfaces + GL.
-class ChildGLImpl : public InterfaceImpl<Child>, public SurfaceClient {
+class Painter : public InterfaceImpl<Child>, public SurfaceClient {
  public:
-  ChildGLImpl(ApplicationConnection* surfaces_service_connection,
-              CommandBufferPtr command_buffer);
-  virtual ~ChildGLImpl();
+  Painter(ApplicationConnection* surfaces_service_connection,
+          CommandBufferPtr command_buffer);
+  ~Painter();
 
   // SurfaceClient implementation
   virtual void ReturnResources(Array<ReturnedResourcePtr> resources) override;
 
  private:
   // Child implementation.
   virtual void ProduceFrame(
       ColorPtr color,
       SizePtr size,
       const mojo::Callback<void(SurfaceIdPtr id)>& callback) override;
 
   void SurfaceConnectionCreated(SurfacePtr surface, uint32_t id_namespace);
   void AllocateSurface();
   void Draw();
 
-  SkColor color_;
+  skia::RefPtr<GrContext> gr_context_;
+
   gfx::Size size_;
   scoped_ptr<cc::SurfaceIdAllocator> allocator_;
   SurfacesServicePtr surfaces_service_;
   SurfacePtr surface_;
   MojoGLES2Context context_;
   cc::SurfaceId id_;
-  ::examples::SpinningCube cube_;
   Callback<void(SurfaceIdPtr id)> produce_callback_;
-  base::TimeTicks start_time_;
   uint32_t next_resource_id_;
   base::hash_map<uint32_t, GLuint> id_to_tex_map_;
-  base::WeakPtrFactory<ChildGLImpl> weak_factory_;
 
-  DISALLOW_COPY_AND_ASSIGN(ChildGLImpl);
+  base::WeakPtrFactory<Painter> weak_factory_;
+
+  MOJO_DISALLOW_COPY_AND_ASSIGN(Painter);
 };
 
 }  // namespace examples
 }  // namespace mojo
 
-#endif  // EXAMPLES_SURFACES_APP_CHILD_GL_IMPL_H_
+#endif  // EXAMPLES_GANESH_APP_PAINTER_H_