AU: Update Downloader to support our image formats.

src/platform/update_engine/install_plan.h

Index: src/platform/update_engine/install_plan.h
diff --git a/src/platform/update_engine/install_plan.h b/src/platform/update_engine/install_plan.h
index 9151e1b88546559fd43ab3061693d04799dd2309..fba89fe7bd18a3087abdad3c737b4e07d146db56 100644
--- a/src/platform/update_engine/install_plan.h
+++ b/src/platform/update_engine/install_plan.h
@@ -17,23 +17,27 @@ struct InstallPlan {
   InstallPlan(bool is_full,
               const std::string& url,
               const std::string& hash,
-              const std::string& install_path)
+              const std::string& install_path,
+              const std::string& kernel_install_path)
       : is_full_update(is_full),
         download_url(url),
         download_hash(hash),
-        install_path(install_path) {}
+        install_path(install_path),
+        kernel_install_path(kernel_install_path) {}
   InstallPlan() : is_full_update(false) {}
 
   bool is_full_update;
   std::string download_url;  // url to download from
   std::string download_hash;  // hash of the data at the url
   std::string install_path;  // path to install device
+  std::string kernel_install_path;  // path to kernel install device
 
   bool operator==(const InstallPlan& that) const {
     return (is_full_update == that.is_full_update) &&
            (download_url == that.download_url) &&
            (download_hash == that.download_hash) &&
-           (install_path == that.install_path);
+           (install_path == that.install_path) &&
+           (kernel_install_path == that.kernel_install_path);
   }
   bool operator!=(const InstallPlan& that) const {
     return !((*this) == that);
@@ -42,7 +46,8 @@ struct InstallPlan {
     LOG(INFO) << "InstallPlan: "
               << (is_full_update ? "full_update" : "delta_update")
               << ", url: " << download_url << ", hash: " << download_hash
-              << ", install_path: " << install_path;
+              << ", install_path: " << install_path
+              << ", kernel_install_path: " << kernel_install_path;
   }
 };