Fix extension uninstall ping XML.

Bug: 771987
Change-Id: If0293e9c73d575719544fbbdcb1f40fbf6df4962
Reviewed-on: https://chromium-review.googlesource.com/702057Reviewed-by: Sorin Jianu <sorin@chromium.org>
Commit-Queue: Joshua Pawlicki <waffles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506761}

components/update_client/protocol_builder.cc

@@ -159,9 +159,7 @@ std::string BuildUninstalledEventElement(const Component& component) {
   using base::StringAppendF;
 
   std::string event;
-  StringAppendF(&event, "<event eventtype=\"4\"  extracode1=\"%d\"",
-                component.extra_code1());
-
+  StringAppendF(&event, "<event eventtype=\"4\" eventresult=\"1\"");
   if (component.extra_code1())
     StringAppendF(&event, " extracode1=\"%d\"", component.extra_code1());
   StringAppendF(&event, "/>");