Add UI hook for distilling web pages for test shell (relanding)

components/dom_distiller.gypi

Index: components/dom_distiller.gypi
diff --git a/components/dom_distiller.gypi b/components/dom_distiller.gypi
index 1ad3f070e893fd1914ceef9ddbae40e27b7e7bb2..4e8b6edcc79211edb5a132f6720b8260e1cda4e0 100644
--- a/components/dom_distiller.gypi
+++ b/components/dom_distiller.gypi
@@ -48,6 +48,8 @@
             'distilled_page_proto',
           ],
           'sources': [
+            'dom_distiller/android/component_jni_registrar.cc',
+            'dom_distiller/android/component_jni_registrar.h',
             'dom_distiller/core/article_entry.cc',
             'dom_distiller/core/article_entry.h',
             'dom_distiller/core/distiller.cc',
@@ -73,9 +75,18 @@
             'dom_distiller/core/task_tracker.h',
             'dom_distiller/core/url_constants.cc',
             'dom_distiller/core/url_constants.h',
+            'dom_distiller/core/url_utils_android.cc',
+            'dom_distiller/core/url_utils_android.h',
             'dom_distiller/core/url_utils.cc',
             'dom_distiller/core/url_utils.h',
           ],
+          'conditions': [
+            ['OS == "android"', {
+              'dependencies': [
+                'dom_distiller_core_jni_headers',
+              ],
+            }],
+          ],
         },
         {
           'target_name': 'dom_distiller_test_support',
@@ -137,6 +148,32 @@
             },
           ],
         }],
+        ['OS=="android"', {
+          'targets': [
+            {
+              'target_name': 'dom_distiller_core_java',
+              'type': 'none',
+              'dependencies': [
+                '../base/base.gyp:base',
+              ],
+              'variables': {
+                'java_in_dir': 'dom_distiller/android/java',
+              },
+              'includes': [ '../build/java.gypi' ],
+            },
+            {
+              'target_name': 'dom_distiller_core_jni_headers',
+              'type': 'none',
+              'sources': [
+                'dom_distiller/android/java/src/org/chromium/components/dom_distiller/core/DomDistillerUrlUtils.java',
+              ],
+              'variables': {
+                'jni_gen_package': 'dom_distiller_core',
+              },
+              'includes': [ '../build/jni_generator.gypi' ],
+            },
+          ],
+        }],
       ],
     }],
   ],