Abstract PPAPI's ImageData behind webrtc::DesktopFrame interface

remoting/client/plugin/pepper_image_buffer.h

+#ifndef REMOTING_CLIENT_PLUGIN_PEPPER_IMAGE_BUFFER_H_
+#define REMOTING_CLIENT_PLUGIN_PEPPER_IMAGE_BUFFER_H_
+
+#include "remoting/client/image_buffer.h"
+
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/size.h"
+
+namespace remoting {
+
+// ImageBuffer that uses PPAPI to allocate space for a raw image.
+class PepperImageBuffer : public ImageBuffer {
+ public:
+  // Constructor.
+  PepperImageBuffer(const pp::InstanceHandle& instance, int width, int height);
+
+  // ImageBuffer implementation:
+  virtual bool is_null() OVERRIDE;
+  virtual uint8* data() OVERRIDE;
+  virtual int width() OVERRIDE;
+  virtual int height() OVERRIDE;
+  virtual int32 stride() OVERRIDE;
+
+  // Provides access to the underlying PPAPI object.
+  const pp::ImageData& data_object();
+
+ private:
+  // Size of the image (used only for construction of data_).
+  pp::Size size_;
+
+  // Underlying PPAPI image that's actually responsible for everything.
+  pp::ImageData data_;
+};
+
+}  // namespace remoting
+
+#endif