AU: Gut code for old updater. New protobuf for v2 updater.

src/platform/update_engine/download_action.cc

Index: src/platform/update_engine/download_action.cc
diff --git a/src/platform/update_engine/download_action.cc b/src/platform/update_engine/download_action.cc
index 833f806edd1baa32105248768c1a9ad6ed4639ba..6da671947a28b33c5543063f05ce1e70dda617e3 100644
--- a/src/platform/update_engine/download_action.cc
+++ b/src/platform/update_engine/download_action.cc
@@ -31,7 +31,7 @@ void DownloadAction::PerformAction() {
 
   should_decompress_ = install_plan.is_full_update;
   url_ = install_plan.download_url;
-  output_path_ = install_plan.download_path;
+  output_path_ = install_plan.install_path;
   hash_ = install_plan.download_hash;
   install_plan.Dump();
 
@@ -39,7 +39,6 @@ void DownloadAction::PerformAction() {
     decompressing_file_writer_.reset(
         new GzipDecompressingFileWriter(direct_file_writer_.get()));
     writer_ = decompressing_file_writer_.get();
-    output_path_ = install_plan.install_path;
   } else {
     writer_ = direct_file_writer_.get();
   }