Create the base Custom Context Menu Dialog.

chrome/android/java_sources.gni

Index: chrome/android/java_sources.gni
diff --git a/chrome/android/java_sources.gni b/chrome/android/java_sources.gni
index ce7506244340811ef2bd034ede10530c914e7ac7..c3e6232f5fb5a32d1b4545b83fb606052582b2b6 100644
--- a/chrome/android/java_sources.gni
+++ b/chrome/android/java_sources.gni
@@ -224,6 +224,10 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/contextmenu/ContextMenuPopulator.java",
   "java/src/org/chromium/chrome/browser/contextmenu/ContextMenuTitleView.java",
   "java/src/org/chromium/chrome/browser/contextmenu/ContextMenuUi.java",
+  "java/src/org/chromium/chrome/browser/contextmenu/TabularContextMenuUi.java",
+  "java/src/org/chromium/chrome/browser/contextmenu/TabularContextMenuListAdapter.java",
+  "java/src/org/chromium/chrome/browser/contextmenu/TabularContextMenuPagerAdapter.java",
+  "java/src/org/chromium/chrome/browser/contextmenu/TabularContextMenuViewPager.java",
   "java/src/org/chromium/chrome/browser/contextmenu/PlatformContextMenuUi.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/BarOverlapTapSuppression.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchBlacklist.java",
@@ -1284,6 +1288,7 @@ chrome_test_java_sources = [
   "javatests/src/org/chromium/chrome/browser/compositor/layouts/MockResourcesForLayout.java",
   "javatests/src/org/chromium/chrome/browser/compositor/overlays/strip/TabStripTest.java",
   "javatests/src/org/chromium/chrome/browser/contextmenu/ContextMenuTest.java",
+  "javatests/src/org/chromium/chrome/browser/contextmenu/TabularContextMenuUiTest.java",
   "javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFakeServer.java",
   "javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java",
   "javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchPolicyTest.java",