Move net.html import down into the modules that use it

Avoid importing net.html in the top level and instead have the files that
use it importing it themselves.

NOTRY=true

Review URL: https://codereview.chromium.org/467013002

git-svn-id: svn://svn.chromium.org/blink/trunk@180123 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Tools/GardeningServer/model/ct-commit-log.html

@@ -4,8 +4,8 @@ Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 -->
 
+<link rel="import" href="../lib/net.html">
 <link rel='import' href='ct-commit.html'>
-
 <link rel='import' href='ct-repositories.html'>
 
 <script>

third_party/WebKit/Tools/GardeningServer/model/tree-status.html

@@ -4,6 +4,8 @@ Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 -->
 
+<link rel="import" href="../lib/net.html">
+
 <script>
 function TreeStatus(project) {
   this.project = project;

third_party/WebKit/Tools/GardeningServer/ui/ct-failure-analyzer.html

@@ -5,6 +5,7 @@ found in the LICENSE file.
 -->
 <link href="../model/ct-builder-revisions.html" rel="import">
 
+<link rel="import" href="../lib/net.html">
 <link rel="import" href="../model/ct-failure.html">
 <link rel="import" href="../model/ct-failure-group.html">
 

third_party/WebKit/Tools/GardeningServer/ui/ct-sheriff-o-matic.html

@@ -9,7 +9,6 @@ found in the LICENSE file.
 
 <link rel="import" href="../bower_components/core-animated-pages/core-animated-pages.html">
 <link rel="import" href="../bower_components/core-animated-pages/transitions/slide-from-right.html">
-<link rel="import" href="../lib/net.html">
 <link rel="import" href="ct-results-panel.html">
 <link rel="import" href="ct-unexpected-failures.html">