service worker: Implement NavigationPreloadManager.setHeaderValue

content/browser/bad_message.h

Index: content/browser/bad_message.h
diff --git a/content/browser/bad_message.h b/content/browser/bad_message.h
index e05265c00d04a09692fa8d72a8f784223fbc140f..6b42b5b76d50c126e020e23fb8c636e430ca21f6 100644
--- a/content/browser/bad_message.h
+++ b/content/browser/bad_message.h
@@ -172,6 +172,10 @@ enum BadMessageReason {
   SWDH_GET_NAVIGATION_PRELOAD_STATE_NO_HOST = 148,
   SWDH_GET_NAVIGATION_PRELOAD_STATE_INVALID_ORIGIN = 149,
   SWDH_GET_NAVIGATION_PRELOAD_STATE_BAD_REGISTRATION_ID = 150,
+  SWDH_SET_NAVIGATION_PRELOAD_HEADER_NO_HOST = 151,
+  SWDH_SET_NAVIGATION_PRELOAD_HEADER_INVALID_ORIGIN = 152,
+  SWDH_SET_NAVIGATION_PRELOAD_HEADER_BAD_REGISTRATION_ID = 153,
+  SWDH_SET_NAVIGATION_PRELOAD_HEADER_BAD_VALUE = 154,
 
   // Please add new elements here. The naming convention is abbreviated class
   // name (e.g. RenderFrameHost becomes RFH) plus a unique description of the