make intent extra a Uri instead of String when launching it

DownloadProvider sets the extra as Uri. Chrome should also do the same
so the security team can handle them properly.

BUG=899105

Change-Id: I264ed29c9a9f7c730531116ab4261e2de71481b9
Reviewed-on: https://chromium-review.googlesource.com/c/1302099Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Min Qin <qinmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603207}

chrome/android/java/src/org/chromium/chrome/browser/media/MediaViewerUtils.java

@@ -150,8 +150,10 @@ public class MediaViewerUtils {
     public static void setOriginalUrlAndReferralExtraToIntent(
             Intent intent, String originalUrl, String referrer) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) return;
-        if (originalUrl != null) intent.putExtra(Intent.EXTRA_ORIGINATING_URI, originalUrl);
-        if (referrer != null) intent.putExtra(Intent.EXTRA_REFERRER, referrer);
+        if (originalUrl != null) {
+            intent.putExtra(Intent.EXTRA_ORIGINATING_URI, Uri.parse(originalUrl));
+        }
+        if (referrer != null) intent.putExtra(Intent.EXTRA_REFERRER, Uri.parse(originalUrl));
     }
 
     /**