Always clear textures in GVDA::SetTextureCleared(). Don't check.

media/gpu/ipc/service/gpu_video_decode_accelerator.cc

Index: media/gpu/ipc/service/gpu_video_decode_accelerator.cc
diff --git a/media/gpu/ipc/service/gpu_video_decode_accelerator.cc b/media/gpu/ipc/service/gpu_video_decode_accelerator.cc
index ebc4ecd37174fa11147e657e651a5a822a61f3ad..bfd03924d2531340bdc152c020b38057378b0d18 100644
--- a/media/gpu/ipc/service/gpu_video_decode_accelerator.cc
+++ b/media/gpu/ipc/service/gpu_video_decode_accelerator.cc
@@ -525,14 +525,7 @@ void GpuVideoDecodeAccelerator::SetTextureCleared(const Picture& picture) {
     GLenum target = texture_ref->texture()->target();
     gpu::gles2::TextureManager* texture_manager =
         stub_->decoder()->GetContextGroup()->texture_manager();
-
-    // External textures are a special case and expected to already be cleared.
-    if (target == GL_TEXTURE_EXTERNAL_OES) {
-      DCHECK(texture_ref->texture()->IsLevelCleared(target, 0));
-    } else {
-      DCHECK(!texture_ref->texture()->IsLevelCleared(target, 0));
-      texture_manager->SetLevelCleared(texture_ref.get(), target, 0, true);
-    }
+    texture_manager->SetLevelCleared(texture_ref.get(), target, 0, true);
   }
   uncleared_textures_.erase(it);
 }