Fix chrome_shell_java deps

The native parts of dom_distiller will try to register jni methods on
startup. This fails if the apk doesn't contain the corresponding java
bits. So, even though chrome_shell_apk doesn't actually use the java
stuff in dom_distiller_content_java, it still needs to depend on it and
include it in the apk.

Review URL: https://codereview.chromium.org/1090153007

Cr-Commit-Position: refs/heads/master@{#326937}

chrome/android/BUILD.gn

@@ -236,6 +236,7 @@ android_library("chrome_shell_java") {
     ":chrome_java",
     "//base:base_java",
     "//content/public/android:content_java",
+    "//components/dom_distiller/android:dom_distiller_content_java",
     "//components/dom_distiller/android:dom_distiller_core_java",
     "//components/service_tab_launcher:service_tab_launcher_java",
     "//components/web_contents_delegate_android:web_contents_delegate_android_java",