Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA.

content/common/gpu/media/generic_v4l2_video_device.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.
 //
 // This file contains the implementation of GenericV4L2Device used on
 // platforms, which provide generic V4L2 video codec devices.
 
 #ifndef CONTENT_COMMON_GPU_MEDIA_GENERIC_V4L2_VIDEO_DEVICE_H_
 #define CONTENT_COMMON_GPU_MEDIA_GENERIC_V4L2_VIDEO_DEVICE_H_
 
 #include "content/common/gpu/media/v4l2_video_device.h"
 
 namespace content {
 
 class GenericV4L2Device : public V4L2Device {
  public:
   explicit GenericV4L2Device(Type type);
-  virtual ~GenericV4L2Device();
 
   // V4L2Device implementation.
   int Ioctl(int request, void* arg) override;
   bool Poll(bool poll_device, bool* event_pending) override;
   bool SetDevicePollInterrupt() override;
   bool ClearDevicePollInterrupt() override;
   void* Mmap(void* addr,
              unsigned int len,
              int prot,
              int flags,
              unsigned int offset) override;
   void Munmap(void* addr, unsigned int len) override;
   bool Initialize() override;
   bool CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) override;
   EGLImageKHR CreateEGLImage(EGLDisplay egl_display,
                              EGLContext egl_context,
                              GLuint texture_id,
                              gfx::Size frame_buffer_size,
                              unsigned int buffer_index,
                              uint32_t v4l2_pixfmt,
                              size_t num_v4l2_planes);
   EGLBoolean DestroyEGLImage(EGLDisplay egl_display,
                              EGLImageKHR egl_image) override;
   GLenum GetTextureTarget() override;
   uint32 PreferredInputFormat() override;
 
  private:
+  ~GenericV4L2Device() override;
   const Type type_;
 
   // The actual device fd.
   int device_fd_;
 
   // eventfd fd to signal device poll thread when its poll() should be
   // interrupted.
   int device_poll_interrupt_fd_;
 
   DISALLOW_COPY_AND_ASSIGN(GenericV4L2Device);
 
   // Lazily initialize static data after sandbox is enabled.  Return false on
   // init failure.
   static bool PostSandboxInitialization();
 };
 }  //  namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_GENERIC_V4L2_VIDEO_DEVICE_H_