Update Linux to use scoped_refptr<T>::get() rather than implicit "operator T*"

gpu/command_buffer/service/texture_manager.cc

Index: gpu/command_buffer/service/texture_manager.cc
diff --git a/gpu/command_buffer/service/texture_manager.cc b/gpu/command_buffer/service/texture_manager.cc
index 73b918425ad08c97daa4a5acd0989b31781e240d..117e951b29d4a8e2201e35dbe2b8447792ddac54 100644
--- a/gpu/command_buffer/service/texture_manager.cc
+++ b/gpu/command_buffer/service/texture_manager.cc
@@ -1101,7 +1101,7 @@ TextureRef* TextureManager::CreateTexture(
 TextureRef* TextureManager::GetTexture(
     GLuint client_id) const {
   TextureMap::const_iterator it = textures_.find(client_id);
-  return it != textures_.end() ? it->second : NULL;
+  return it != textures_.end() ? it->second.get() : NULL;
 }
 
 void TextureManager::RemoveTexture(GLuint client_id) {