[html] fix missing or extraneous lt/gt in html

This CL fixes an extraneous gt (>) causing an error message to display
improperly. Also fixed a missing lt (<) in my search to see if the gt
mistake had been made elsewhere.

Bug: 751384
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I808aa2e811e72f39e781aa7232fd798514ef8f73
Reviewed-on: https://chromium-review.googlesource.com/599069Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Dave Schuyler <dschuyler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491597}

chrome/browser/resources/pdf/elements/viewer-error-screen/viewer-error-screen.html

@@ -13,8 +13,7 @@
       <div slot="body">
         [[strings.pageLoadFailed]]
       </div>
-      <div slot="button-container">
-          hidden$="[[!reloadFn]]">
+      <div slot="button-container" hidden$="[[!reloadFn]]">
         <paper-button class="action-button" on-click="reload">
           [[strings.pageReload]]
         </paper-button>

chrome/browser/resources/settings/internet_page/network_proxy.html

@@ -21,7 +21,7 @@
 <link rel="import" href="../prefs/prefs_behavior.html">
 <link rel="import" href="../settings_vars_css.html">
 <link rel="import" href="internet_shared_css.html">
-link rel="import" href="network_proxy_exclusions.html">
+<link rel="import" href="network_proxy_exclusions.html">
 <link rel="import" href="network_proxy_input.html">
 
 <dom-module id="network-proxy">