Revert hardware decoder changes causing ChromeOS HW test crash.

content/common/gpu/media/v4l2_video_device.h

Index: content/common/gpu/media/v4l2_video_device.h
diff --git a/content/common/gpu/media/v4l2_video_device.h b/content/common/gpu/media/v4l2_video_device.h
index 7bab5366f48bd9ecb0275fa1597392b677bea93d..346dff1a497155823b5039ce2cd8c0777761eab2 100644
--- a/content/common/gpu/media/v4l2_video_device.h
+++ b/content/common/gpu/media/v4l2_video_device.h
@@ -22,7 +22,6 @@ class V4L2Device {
   static media::VideoFrame::Format V4L2PixFmtToVideoFrameFormat(uint32 format);
   static uint32 VideoFrameFormatToV4L2PixFmt(media::VideoFrame::Format format);
   static uint32 VideoCodecProfileToV4L2PixFmt(media::VideoCodecProfile profile);
-  static uint32_t V4L2PixFmtToDrmFormat(uint32_t format);
   // Convert format requirements requested by a V4L2 device to gfx::Size.
   static gfx::Size CodedSizeFromV4L2Format(struct v4l2_format format);
 
@@ -72,10 +71,6 @@ class V4L2Device {
   // Returns true on success.
   virtual bool Initialize() = 0;
 
-  // Return true if the given V4L2 pixfmt can be used in CreateEGLImage()
-  // for the current platform.
-  virtual bool CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) = 0;
-
   // Creates an EGLImageKHR since each V4L2Device may use a different method of
   // acquiring one and associating it to the given texture. The texture_id is
   // used to bind the texture to the returned EGLImageKHR. buffer_index can be
@@ -86,8 +81,7 @@ class V4L2Device {
                                      GLuint texture_id,
                                      gfx::Size frame_buffer_size,
                                      unsigned int buffer_index,
-                                     uint32_t v4l2_pixfmt,
-                                     size_t num_v4l2_planes) = 0;
+                                     size_t planes_count) = 0;
 
   // Destroys the EGLImageKHR.
   virtual EGLBoolean DestroyEGLImage(EGLDisplay egl_display,
@@ -98,6 +92,9 @@ class V4L2Device {
 
   // Returns the preferred V4L2 input format or 0 if don't care.
   virtual uint32 PreferredInputFormat() = 0;
+
+  // Returns the preferred V4L2 output format or 0 if don't care.
+  virtual uint32 PreferredOutputFormat() = 0;
 };
 
 }  //  namespace content