Add MimeHandlerViewGuest::NavigationStateChanged to handle title changes

and propagate them upwards to the embedder.

BUG=47914

Review URL: https://codereview.chromium.org/1412073002

Cr-Commit-Position: refs/heads/master@{#356366}

2 files changed, 21 insertions, 0 deletions

diff --git a/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.cc b/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.cc
index aee7d72..55b2426 100644
--- a/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.cc
+++ b/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.cc
@@ -8,6 +8,7 @@
 #include "components/guest_view/common/guest_view_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/host_zoom_map.h"
+#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/stream_handle.h"
 #include "content/public/browser/stream_info.h"
@@ -162,6 +163,24 @@ WebContents* MimeHandlerViewGuest::OpenURLFromTab(
       embedder_web_contents(), params);
 }
 
+void MimeHandlerViewGuest::NavigationStateChanged(
+    WebContents* source,
+    content::InvalidateTypes changed_flags) {
+  if (!(changed_flags & content::INVALIDATE_TYPE_TITLE))
+    return;
+
+  if (!is_full_page_plugin())
+    return;
+
+  content::NavigationEntry* last_committed_entry =
+      embedder_web_contents()->GetController().GetLastCommittedEntry();
+  if (last_committed_entry) {
+    last_committed_entry->SetTitle(source->GetTitle());
+    embedder_web_contents()->GetDelegate()->NavigationStateChanged(
+        embedder_web_contents(), changed_flags);
+  }
+}
+
 bool MimeHandlerViewGuest::HandleContextMenu(
     const content::ContextMenuParams& params) {
   if (delegate_)
diff --git a/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h b/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
index d482430..a876f6a 100644
--- a/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
+++ b/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
@@ -78,6 +78,8 @@ class MimeHandlerViewGuest :
   content::WebContents* OpenURLFromTab(
       content::WebContents* source,
       const content::OpenURLParams& params) final;
+  void NavigationStateChanged(content::WebContents* source,
+                              content::InvalidateTypes changed_flags) final;
   bool HandleContextMenu(const content::ContextMenuParams& params) final;
   bool PreHandleGestureEvent(content::WebContents* source,
                              const blink::WebGestureEvent& event) final;