Add a full Blimp integration test.

blimp/client/public/contents/blimp_contents_view.h

Index: blimp/client/public/contents/blimp_contents_view.h
diff --git a/blimp/client/public/contents/blimp_contents_view.h b/blimp/client/public/contents/blimp_contents_view.h
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+++ b/blimp/client/public/contents/blimp_contents_view.h
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+// Copyright 2016 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 BLIMP_CLIENT_PUBLIC_CONTENTS_BLIMP_CONTENTS_VIEW_H_
+#define BLIMP_CLIENT_PUBLIC_CONTENTS_BLIMP_CONTENTS_VIEW_H_
+
+#include "base/macros.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace cc {
+class Layer;
+}  // namespace cc
+
+namespace gfx {
+class Size;
+}  // namespace gfx
+
+namespace ui {
+class MotionEvent;
+}
+
+namespace blimp {
+namespace client {
+
+// A BlimpContentsView exposes the classes required to visually represent a
+// BlimpContents (gfx::NativeView and cc::Layer).  It also exposes methods that
+// let the embedder interact with the page content.
+class BlimpContentsView {
+ public:
+  using ReadbackRequestCallback =
+      base::Callback<void(std::unique_ptr<SkBitmap>)>;
+
+  virtual ~BlimpContentsView() = default;
+
+  // Returns the platform specific NativeView that represents the contents of
+  // this BlimpContents.
+  virtual gfx::NativeView GetNativeView() = 0;
+
+  // Returns the CC Layer that represents the contents of this BlimpContents.
+  // This can be used instead of |GetNativeView()| if only the CC Layer is
+  // required.
+  virtual scoped_refptr<cc::Layer> GetLayer() = 0;
+
+  // Called to set both the size and the scale of the BlimpContents.  |size| is
+  // in pixels and |device_scale_factor| is in terms of dp to px.
+  virtual void SetSizeAndScale(const gfx::Size& size,
+                               float device_scale_factor) = 0;
+
+  // Called to pass a ui::MotionEvent to the BlimpContents.  Returns whether or
+  // not |motion_event| was handled.
+  virtual bool OnTouchEvent(const ui::MotionEvent& motion_event) = 0;
+
+  // Copies the current visible content from the BlimpContents and returns a
+  // SkBitmap through |callback|.  If the readback fails |nullptr| is returned
+  // instead.
+  virtual void CopyFromCompositingSurface(
+      const ReadbackRequestCallback& callback) = 0;
+
+ protected:
+  BlimpContentsView() = default;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BlimpContentsView);
+};
+
+}  // namespace client
+}  // namespace blimp
+
+#endif  // BLIMP_CLIENT_PUBLIC_CONTENTS_BLIMP_CONTENTS_VIEW_H_