Public glue layer plumbing for View#startActivityForResult

android_webview/apk/java/proguard.flags

Index: android_webview/apk/java/proguard.flags
diff --git a/android_webview/apk/java/proguard.flags b/android_webview/apk/java/proguard.flags
index d8f80ccd43dfa8e4deaf574cece196c89c03bebe..43eb85ba63535fe1a80636235a81f64e76668859 100644
--- a/android_webview/apk/java/proguard.flags
+++ b/android_webview/apk/java/proguard.flags
@@ -80,6 +80,11 @@
   public static boolean dumpWithoutCrashing(...);
 }
 
+#TODO(hush): remove after N release. crbug.com/543272
+-keep class com.android.webview.chromium.WebViewChromium {
+  public void onActivityResult(int,int,android.content.Intent);
+}
+
 # Ignore notes and warnings about the support library, which uses reflection and
 # may reference classes no longer in the SDK.
 -dontnote android.support.**