Media Router: dismiss Android cast dialogs when clicking outside of them.

Bug: 891455
Change-Id: I3fa228b3ef6946f151510c50137cd3a172d50384
Reviewed-on: https://chromium-review.googlesource.com/c/1257678Reviewed-by: Takumi Fujimoto <takumif@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595965}

chrome/android/java/src/org/chromium/chrome/browser/media/router/MediaRouteChooserDialogManager.java

@@ -4,10 +4,13 @@
 
 package org.chromium.chrome.browser.media.router;
 
+import android.content.Context;
 import android.content.DialogInterface;
+import android.os.Bundle;
 import android.os.Handler;
 import android.support.v4.app.DialogFragment;
 import android.support.v4.app.FragmentManager;
+import android.support.v7.app.MediaRouteChooserDialog;
 import android.support.v7.app.MediaRouteChooserDialogFragment;
 import android.support.v7.media.MediaRouteSelector;
 
@@ -46,6 +49,15 @@ public class MediaRouteChooserDialogManager extends BaseMediaRouteDialogManager
             mManager = manager;
         }
 
+        @Override
+        public MediaRouteChooserDialog onCreateChooserDialog(
+                Context context, Bundle savedInstanceState) {
+            MediaRouteChooserDialog dialog =
+                    super.onCreateChooserDialog(context, savedInstanceState);
+            dialog.setCanceledOnTouchOutside(true);
+            return dialog;
+        }
+
         @Override
         public void onStart() {
             mVisibilitySaver.saveSystemVisibility(getActivity());

chrome/android/java/src/org/chromium/chrome/browser/media/router/MediaRouteControllerDialogManager.java

@@ -4,10 +4,13 @@
 
 package org.chromium.chrome.browser.media.router;
 
+import android.content.Context;
 import android.content.DialogInterface;
+import android.os.Bundle;
 import android.os.Handler;
 import android.support.v4.app.DialogFragment;
 import android.support.v4.app.FragmentManager;
+import android.support.v7.app.MediaRouteControllerDialog;
 import android.support.v7.app.MediaRouteControllerDialogFragment;
 import android.support.v7.media.MediaRouteSelector;
 import android.support.v7.media.MediaRouter;
@@ -58,6 +61,15 @@ public class MediaRouteControllerDialogManager extends BaseMediaRouteDialogManag
             mCallback = callback;
         }
 
+        @Override
+        public MediaRouteControllerDialog onCreateControllerDialog(
+                Context context, Bundle savedInstanceState) {
+            MediaRouteControllerDialog dialog =
+                    super.onCreateControllerDialog(context, savedInstanceState);
+            dialog.setCanceledOnTouchOutside(true);
+            return dialog;
+        }
+
         @Override
         public void onStart() {
             mVisibilitySaver.saveSystemVisibility(getActivity());