[Media Intent Handler] Show entire content:// URI

This CL adds content:// to the list of schemes that the UrlBar should
display completely. This fixes an issue with the media intent handler
where only "content:" was shown as the url, which looked buggy.

Bug: 872489
Change-Id: I4af4bf01df1b62738df2023ebb633b4674562b86
Reviewed-on: https://chromium-review.googlesource.com/1168383Reviewed-by: Ted Choc <tedchoc@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Commit-Queue: Tommy Steimel <steimel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581927}

chrome/android/java/src/org/chromium/chrome/browser/omnibox/UrlBarData.java

@@ -25,8 +25,9 @@ public class UrlBarData {
     /**
      * The URL schemes that should be displayed complete with path.
      */
-    public static final HashSet<String> UNSUPPORTED_SCHEMES_TO_SPLIT = CollectionUtil.newHashSet(
-            UrlConstants.FILE_SCHEME, UrlConstants.JAVASCRIPT_SCHEME, UrlConstants.DATA_SCHEME);
+    public static final HashSet<String> UNSUPPORTED_SCHEMES_TO_SPLIT =
+            CollectionUtil.newHashSet(UrlConstants.FILE_SCHEME, UrlConstants.JAVASCRIPT_SCHEME,
+                    UrlConstants.DATA_SCHEME, UrlConstants.CONTENT_SCHEME);
     /**
      * URI schemes that ContentView can handle.
      *