DevServer: Add non-null value to GitilesServlet call

That parameter was added through commit fbe16e86, which forgot to fix
this change case accordingly.

Make that parameter not @Nullable anymore, as calling that constructor
with a null value caused an unrecoverable NPE for this change.

This makes run_dev.sh [1] and the dev build target ([2]) working again.

[1] Documentation/developer-guide.md
[2] bazel build java/com/google/gitiles/dev

Change-Id: I45c65c5debad8fc0a50252cc530d8e84e712db4a

java/com/google/gitiles/GitilesFilter.java

diff --git a/java/com/google/gitiles/GitilesFilter.java b/java/com/google/gitiles/GitilesFilter.java
index 8876007..b347e08 100644
--- a/java/com/google/gitiles/GitilesFilter.java
+++ b/java/com/google/gitiles/GitilesFilter.java
@@ -191,7 +191,7 @@
       @Nullable TimeCache timeCache,
       @Nullable BlameCache blameCache,
       @Nullable GitwebRedirectFilter gitwebRedirect,
-      @Nullable BranchRedirectFilter branchRedirect,
+      BranchRedirectFilter branchRedirect,
       @Nullable Filter errorHandler) {
     this.config = checkNotNull(config, "config");
     this.renderer = renderer;

java/com/google/gitiles/GitilesServlet.java

diff --git a/java/com/google/gitiles/GitilesServlet.java b/java/com/google/gitiles/GitilesServlet.java
index df2c3da..4467cfa 100644
--- a/java/com/google/gitiles/GitilesServlet.java
+++ b/java/com/google/gitiles/GitilesServlet.java
@@ -52,7 +52,7 @@
       @Nullable TimeCache timeCache,
       @Nullable BlameCache blameCache,
       @Nullable GitwebRedirectFilter gitwebRedirect,
-      @Nullable BranchRedirectFilter branchRedirect) {
+      BranchRedirectFilter branchRedirect) {
     this(
         config,
         renderer,
@@ -77,7 +77,7 @@
       @Nullable TimeCache timeCache,
       @Nullable BlameCache blameCache,
       @Nullable GitwebRedirectFilter gitwebRedirect,
-      @Nullable BranchRedirectFilter branchRedirect,
+      BranchRedirectFilter branchRedirect,
       @Nullable Filter errorHandler) {
     super(
         new GitilesFilter(

java/com/google/gitiles/dev/DevServer.java

diff --git a/java/com/google/gitiles/dev/DevServer.java b/java/com/google/gitiles/dev/DevServer.java
index 29414c4..5a8fed5 100644
--- a/java/com/google/gitiles/dev/DevServer.java
+++ b/java/com/google/gitiles/dev/DevServer.java
@@ -19,6 +19,7 @@
 
 import com.google.common.base.Strings;
 import com.google.common.html.types.UncheckedConversions;
+import com.google.gitiles.BranchRedirectFilter;
 import com.google.gitiles.DebugRenderer;
 import com.google.gitiles.GitilesAccess;
 import com.google.gitiles.GitilesServlet;
@@ -137,7 +138,9 @@
     if (!Strings.isNullOrEmpty(docRoot)) {
       servlet = createRootedDocServlet(renderer, docRoot);
     } else {
-      servlet = new GitilesServlet(cfg, renderer, null, null, null, null, null, null, null);
+      servlet =
+          new GitilesServlet(
+              cfg, renderer, null, null, null, null, null, null, null, new BranchRedirectFilter());
     }
 
     ServletContextHandler handler = new ServletContextHandler();