Update the UI examples.

examples/ganesh_app/ganesh_view.cc

-// 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.
-
-#include "examples/ganesh_app/ganesh_view.h"
-
-#include "base/logging.h"
-#include "base/trace_event/trace_event.h"
-#include "mojo/skia/ganesh_texture_surface.h"
-#include "third_party/skia/include/core/SkCanvas.h"
-#include "third_party/skia/include/core/SkColor.h"
-
-namespace examples {
-
-namespace {
-
-mojo::Size ToSize(const mojo::Rect& rect) {
-  mojo::Size size;
-  size.width = rect.width;
-  size.height = rect.height;
-  return size;
-}
-
-}  // namespace
-
-GaneshView::GaneshView(mojo::Shell* shell, mojo::View* view)
-    : view_(view),
-      gl_context_(mojo::GLContext::Create(shell)),
-      gr_context_(new mojo::GaneshContext(gl_context_)),
-      texture_uploader_(this, shell, gl_context_) {
-  view_->AddObserver(this);
-  Draw(ToSize(view_->bounds()));
-}
-
-GaneshView::~GaneshView() {
-  if (gl_context_) {
-    // GaneshContext needs to be destroyed before GLContext.
-    gr_context_.reset();
-    gl_context_->Destroy();
-  }
-}
-
-void GaneshView::OnSurfaceIdAvailable(mojo::SurfaceIdPtr surface_id) {
-  view_->SetSurfaceId(surface_id.Pass());
-}
-
-void GaneshView::OnViewDestroyed(mojo::View* view) {
-  DCHECK(view == view_);
-  view_->RemoveObserver(this);
-  delete this;
-}
-
-void GaneshView::OnViewInputEvent(mojo::View* view,
-                                  const mojo::EventPtr& event) {
-  Draw(ToSize(view_->bounds()));
-}
-
-void GaneshView::OnViewBoundsChanged(mojo::View* view,
-                                     const mojo::Rect& old_bounds,
-                                     const mojo::Rect& new_bounds) {
-  Draw(ToSize(new_bounds));
-}
-
-void GaneshView::Draw(const mojo::Size& size) {
-  TRACE_EVENT0("ganesh_app", __func__);
-  mojo::GaneshContext::Scope scope(gr_context_.get());
-  mojo::GaneshTextureSurface surface(
-      gr_context_.get(),
-      std::unique_ptr<mojo::GLTexture>(new mojo::GLTexture(gl_context_, size)));
-
-  SkCanvas* canvas = surface.canvas();
-  canvas->clear(SK_ColorCYAN);
-
-  SkPaint paint;
-  paint.setColor(SK_ColorGREEN);
-  SkRect rect = SkRect::MakeWH(size.width, size.height);
-  rect.inset(10, 10);
-  canvas->drawRect(rect, paint);
-
-  paint.setColor(SK_ColorRED);
-  paint.setFlags(SkPaint::kAntiAlias_Flag);
-  canvas->drawCircle(50, 100, 100, paint);
-
-  canvas->flush();
-
-  texture_uploader_.Upload(
-      scoped_ptr<mojo::GLTexture>(surface.TakeTexture().release()));
-}
-
-}  // namespace examples