update_engine: Run clang-format on payload_generator/

BUG=none
TEST=unittest

Change-Id: I00cafb1fc709d8f02119cb0058cfcb0b573ef25d
Reviewed-on: https://chromium-review.googlesource.com/1409927
Commit-Ready: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Sen Jiang <senj@chromium.org>
diff --git a/payload_generator/cycle_breaker.h b/payload_generator/cycle_breaker.h
index 231d63a..01518fe 100644
--- a/payload_generator/cycle_breaker.h
+++ b/payload_generator/cycle_breaker.h
@@ -53,11 +53,11 @@
   bool Circuit(Vertex::Index vertex, Vertex::Index depth);
   bool StackContainsCutEdge() const;
 
-  std::vector<bool> blocked_;  // "blocked" in the paper
-  Vertex::Index current_vertex_;  // "s" in the paper
+  std::vector<bool> blocked_;         // "blocked" in the paper
+  Vertex::Index current_vertex_;      // "s" in the paper
   std::vector<Vertex::Index> stack_;  // the stack variable in the paper
-  Graph subgraph_;  // "A_K" in the paper
-  Graph blocked_graph_;  // "B" in the paper
+  Graph subgraph_;                    // "A_K" in the paper
+  Graph blocked_graph_;               // "B" in the paper
 
   std::set<Edge> cut_edges_;