fix build when ffmpeg, libvpx and libwebm are disabled

content/renderer/pepper/video_decoder_shim.cc

 // 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.
 
 #include "content/renderer/pepper/video_decoder_shim.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 
@@ skipping 30 matching lines @@
     kProgram_GrGLBackendState | kPixelStore_GrGLBackendState;
 
 namespace {
 
 bool IsCodecSupported(media::VideoCodec codec) {
 #if !defined(MEDIA_DISABLE_LIBVPX)
   if (codec == media::kCodecVP9)
     return true;
 #endif
 
+#if !defined(MEDIA_DISABLE_FFMPEG) && !defined(DISABLE_FFMPEG_VIDEO_DECODERS)
   return media::FFmpegVideoDecoder::IsCodecSupported(codec);
+#else
+  return false;
+#endif
 }
 
 }  // namespace
 
 // YUV->RGB converter class using a shader and FBO.
 class VideoDecoderShim::YUVConverter {
  public:
   YUVConverter(const scoped_refptr<cc_blink::ContextProviderWebContext>&);
   ~YUVConverter();
   bool Initialize();
@@ skipping 619 matching lines @@
 
 void VideoDecoderShim::DecoderImpl::Initialize(
     media::VideoDecoderConfig config) {
   DCHECK(!decoder_);
 #if !defined(MEDIA_DISABLE_LIBVPX)
   if (config.codec() == media::kCodecVP9) {
     decoder_.reset(
         new media::VpxVideoDecoder(base::ThreadTaskRunnerHandle::Get()));
   } else
 #endif
+
+#if !defined(MEDIA_DISABLE_FFMPEG) && !defined(DISABLE_FFMPEG_VIDEO_DECODERS)
   {
     scoped_ptr<media::FFmpegVideoDecoder> ffmpeg_video_decoder(
         new media::FFmpegVideoDecoder(base::ThreadTaskRunnerHandle::Get()));
     ffmpeg_video_decoder->set_decode_nalus(true);
     decoder_ = ffmpeg_video_decoder.Pass();
   }
+#elif defined(MEDIA_DISABLE_LIBVPX)
+  OnInitDone(false);
+  return;
+#endif
 
   // VpxVideoDecoder and FFmpegVideoDecoder support only one pending Decode()
   // request.
   DCHECK_EQ(decoder_->GetMaxDecodeRequests(), 1);
 
   decoder_->Initialize(
       config, true /* low_delay */,
       base::Bind(&VideoDecoderShim::DecoderImpl::OnInitDone,
                  weak_ptr_factory_.GetWeakPtr()),
       base::Bind(&VideoDecoderShim::DecoderImpl::OnOutputComplete,
@@ skipping 399 matching lines @@
 void VideoDecoderShim::DeleteTexture(uint32_t texture_id) {
   gpu::gles2::GLES2Interface* gles2 = context_provider_->ContextGL();
   gles2->DeleteTextures(1, &texture_id);
 }
 
 void VideoDecoderShim::FlushCommandBuffer() {
   context_provider_->ContextGL()->Flush();
 }
 
 }  // namespace content