Remove const interfaces from content::WebContents.

Bug: 908139
Change-Id: I678dc64c18e78392493c2fc3acba974b3b6a28f8
Reviewed-on: https://chromium-review.googlesource.com/c/1349466
Reviewed-by: John Abd-El-Malek <[email protected]>
Commit-Queue: Lucas Gadani <[email protected]>
Cr-Commit-Position: refs/heads/master@{#612261}
diff --git a/content/browser/media/media_internals.cc b/content/browser/media/media_internals.cc
index fc73b531..f626c60 100644
--- a/content/browser/media/media_internals.cc
+++ b/content/browser/media/media_internals.cc
@@ -284,7 +284,7 @@
     return;
   }
 
-  const WebContents* web_contents = WebContents::FromRenderFrameHost(
+  WebContents* web_contents = WebContents::FromRenderFrameHost(
       RenderFrameHost::FromID(render_process_id, render_frame_id));
   if (!web_contents)
     return;