Bug 1450255 - Don't reset the TextureSource when uploading tiles with advanced layers. r=nical

LayerManagerMLGPU does not have a compositor so this line will force the TextureHost to
reupload the buffer later in this function when the TextureSource is set correctly.

--HG--
extra : amend_source : 57f41549565cf770c98ace6d49460d21468568a7

gfx/layers/composite/TiledContentHost.cpp

@@ -320,7 +320,6 @@ TiledLayerBufferComposite::UseTiles(const SurfaceDescriptorTiles& aTiles,
     const TexturedTileDescriptor& texturedDesc = tileDesc.get_TexturedTileDescriptor();
 
     tile.mTextureHost = TextureHost::AsTextureHost(texturedDesc.textureParent());
-    tile.mTextureHost->SetTextureSourceProvider(aLayerManager->GetCompositor());
     if (texturedDesc.readLocked()) {
       tile.mTextureHost->SetReadLocked();
     }