Revert of Plumb decoded video pixel format from GPU process to renderer.

content/renderer/media/rtc_video_decoder.cc

Index: content/renderer/media/rtc_video_decoder.cc
diff --git a/content/renderer/media/rtc_video_decoder.cc b/content/renderer/media/rtc_video_decoder.cc
index fc119f759d576636ae32da6d20f14e722fc59742..d0d0387957c6c07795450b2b343c40dd393c2b42 100644
--- a/content/renderer/media/rtc_video_decoder.cc
+++ b/content/renderer/media/rtc_video_decoder.cc
@@ -66,7 +66,6 @@
       video_codec_type_(type),
       factories_(factories),
       decoder_texture_target_(0),
-      pixel_format_(media::PIXEL_FORMAT_UNKNOWN),
       next_picture_buffer_id_(0),
       state_(UNINITIALIZED),
       decode_complete_callback_(nullptr),
@@ -312,7 +311,6 @@
 }
 
 void RTCVideoDecoder::ProvidePictureBuffers(uint32_t count,
-                                            media::VideoPixelFormat format,
                                             uint32_t textures_per_buffer,
                                             const gfx::Size& size,
                                             uint32_t texture_target) {
@@ -326,17 +324,6 @@
   std::vector<uint32_t> texture_ids;
   std::vector<gpu::Mailbox> texture_mailboxes;
   decoder_texture_target_ = texture_target;
-
-  if (format == media::PIXEL_FORMAT_UNKNOWN)
-    format = media::PIXEL_FORMAT_ARGB;
-
-  if ((pixel_format_ != media::PIXEL_FORMAT_UNKNOWN) &&
-      (format != pixel_format_)) {
-    NotifyError(media::VideoDecodeAccelerator::PLATFORM_FAILURE);
-    return;
-  }
-
-  pixel_format_ = format;
   if (!factories_->CreateTextures(count,
                                   size,
                                   &texture_ids,
@@ -413,8 +400,12 @@
     return;
   }
 
+  media::VideoPixelFormat pixel_format = vda_->GetOutputFormat();
+  if (pixel_format == media::PIXEL_FORMAT_UNKNOWN)
+    pixel_format = media::PIXEL_FORMAT_ARGB;
+
   scoped_refptr<media::VideoFrame> frame =
-      CreateVideoFrame(picture, pb, timestamp, visible_rect, pixel_format_);
+      CreateVideoFrame(picture, pb, timestamp, visible_rect, pixel_format);
   if (!frame) {
     NotifyError(media::VideoDecodeAccelerator::PLATFORM_FAILURE);
     return;