Expose text track settings in Content and implement for Android

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index df33497e5e11e9e6cb91dcdfd056c5d9a91e9416..05a3f1bf71d8fce2f7ea118e1f6e5109bba32fb9 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -1827,6 +1827,11 @@ void RenderFrameHostImpl::SetAccessibilityCallbackForTesting(
   accessibility_testing_callback_ = callback;
 }
 
+void RenderFrameHostImpl::SetTextTrackSettings(
+    const FrameMsg_TextTrackSettings_Params& params) {

[nasko, 2015/03/12 20:53:53]

Let's add a DCHECK to verify the assumptions that this is only called for the
main frame.

+  Send(new FrameMsg_SetTextTrackSettings(routing_id_, params));
+}
+
 const ui::AXTree* RenderFrameHostImpl::GetAXTreeForTesting() {
   return ax_tree_for_testing_.get();
 }