Remove use of deprecated SoyFileSet.Builder constructor

Change-Id: I5a5e9fb80cf957d05a6e63801303c9e2bf1d4f40

gitiles-servlet/src/main/java/com/google/gitiles/DebugRenderer.java

diff --git a/gitiles-servlet/src/main/java/com/google/gitiles/DebugRenderer.java b/gitiles-servlet/src/main/java/com/google/gitiles/DebugRenderer.java
index 9638fd8..1de2f69 100644
--- a/gitiles-servlet/src/main/java/com/google/gitiles/DebugRenderer.java
+++ b/gitiles-servlet/src/main/java/com/google/gitiles/DebugRenderer.java
@@ -38,7 +38,7 @@
 
   @Override
   protected SoyTofu getTofu() {
-    SoyFileSet.Builder builder = new SoyFileSet.Builder()
+    SoyFileSet.Builder builder = SoyFileSet.builder()
         .setCompileTimeGlobals(globals);
     for (URL template : templates) {
       try {

gitiles-servlet/src/main/java/com/google/gitiles/DefaultRenderer.java

diff --git a/gitiles-servlet/src/main/java/com/google/gitiles/DefaultRenderer.java b/gitiles-servlet/src/main/java/com/google/gitiles/DefaultRenderer.java
index 43b4857..3893148 100644
--- a/gitiles-servlet/src/main/java/com/google/gitiles/DefaultRenderer.java
+++ b/gitiles-servlet/src/main/java/com/google/gitiles/DefaultRenderer.java
@@ -46,7 +46,7 @@
           }
         },
         globals, staticPrefix, customTemplates, siteTitle);
-    SoyFileSet.Builder builder = new SoyFileSet.Builder()
+    SoyFileSet.Builder builder = SoyFileSet.builder()
         .setCompileTimeGlobals(this.globals);
     for (URL template : templates) {
       builder.add(template);