Aura on Android: Stub implementation of SelectFileDialog.

ui/shell_dialogs/BUILD.gn

Index: ui/shell_dialogs/BUILD.gn
diff --git a/ui/shell_dialogs/BUILD.gn b/ui/shell_dialogs/BUILD.gn
index 88764d1f113430ef45be94c5ba5368ab59a9bfb3..9696e9839fd87a3b3a009c2c34c7bda9d0c25460 100644
--- a/ui/shell_dialogs/BUILD.gn
+++ b/ui/shell_dialogs/BUILD.gn
@@ -10,8 +10,6 @@ if (is_android) {
 
 component("shell_dialogs") {
   sources = [
-    "android/shell_dialogs_jni_registrar.cc",
-    "android/shell_dialogs_jni_registrar.h",
     "base_shell_dialog.cc",
     "base_shell_dialog.h",
     "base_shell_dialog_win.cc",
@@ -20,8 +18,6 @@ component("shell_dialogs") {
     "linux_shell_dialog.h",
     "select_file_dialog.cc",
     "select_file_dialog.h",
-    "select_file_dialog_android.cc",
-    "select_file_dialog_android.h",
     "select_file_dialog_factory.cc",
     "select_file_dialog_factory.h",
     "select_file_dialog_mac.h",
@@ -52,7 +48,13 @@ component("shell_dialogs") {
     deps += [ "//ui/aura" ]
   }
 
-  if (is_android) {
+  if (is_android && !use_aura) {
+    sources += [
+      "android/shell_dialogs_jni_registrar.cc",
+      "android/shell_dialogs_jni_registrar.h",
+      "select_file_dialog_android.cc",
+      "select_file_dialog_android.h",
+    ]
     deps += [
       "//ui/android",
       "//ui/android:ui_java",
@@ -62,6 +64,13 @@ component("shell_dialogs") {
     libs = [ "jnigraphics" ]
   }
 
+  if (is_android && use_aura) {
+    sources += [
+      "select_file_dialog_auraandroid.cc",
+      "select_file_dialog_auraandroid.h",
+    ]
+  }
+
   if (is_win) {
     deps += [ "//win8:metro_viewer" ]
   }