Update tab sharing infobars label on shared tab navigation.

When the shared tab navigates to a new URL, update the label on the tab
sharing infobars to reflect the new name of the shared tab.

Bug: 999170
Change-Id: I025a8bb2a958bf73cd921a5337c7dc64ee6428ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1816537Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Marina Ciocea <marinaciocea@chromium.org>
Cr-Commit-Position: refs/heads/master@{#698433}

chrome/browser/ui/views/tab_sharing/tab_sharing_ui_views.cc

@@ -20,6 +20,7 @@
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "components/infobars/core/infobar.h"
 #include "components/url_formatter/elide_url.h"
+#include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/origin_util.h"
@@ -115,6 +116,7 @@ TabSharingUIViews::TabSharingUIViews(const content::DesktopMediaID& media_id,
       content::RenderFrameHost::FromID(
           media_id.web_contents_id.render_process_id,
           media_id.web_contents_id.main_render_frame_id));
+  Observe(shared_tab_);
   shared_tab_name_ = GetTabName(shared_tab_);
   profile_ = ProfileManager::GetLastUsedProfileAllowedByPolicy();
   InitContentsBorderWidget(shared_tab_);
@@ -238,6 +240,25 @@ void TabSharingUIViews::OnInfoBarRemoved(infobars::InfoBar* info_bar,
     StopSharing();
 }
 
+void TabSharingUIViews::DidFinishNavigation(content::NavigationHandle* handle) {
+  // Only interested in committed navigations on the shared tab that result in
+  // changing the shared tab's name.
+  if (!handle->IsInMainFrame() || !handle->HasCommitted() ||
+      handle->IsSameDocument() || handle->GetWebContents() != shared_tab_ ||
+      GetTabName(shared_tab_) == shared_tab_name_) {
+    return;
+  }
+  shared_tab_name_ = GetTabName(shared_tab_);
+  for (const auto& infobars_entry : infobars_) {
+    if (infobars_entry.first == shared_tab_)
+      continue;
+    // Recreate infobars to reflect the new shared tab name.
+    infobars_entry.second->owner()->RemoveObserver(this);
+    infobars_entry.second->RemoveSelf();
+    CreateInfobarForWebContents(infobars_entry.first);
+  }
+}
+
 void TabSharingUIViews::CreateInfobarsForAllTabs() {
   BrowserList* browser_list = BrowserList::GetInstance();
   for (auto* browser : *browser_list) {

chrome/browser/ui/views/tab_sharing/tab_sharing_ui_views.h

@@ -18,6 +18,7 @@
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
 #include "components/infobars/core/infobar_manager.h"
 #include "content/public/browser/desktop_media_id.h"
+#include "content/public/browser/web_contents_observer.h"
 
 namespace content {
 class WebContents;
@@ -31,7 +32,8 @@ class Profile;
 class TabSharingUIViews : public TabSharingUI,
                           public BrowserListObserver,
                           public TabStripModelObserver,
-                          public infobars::InfoBarManager::Observer {
+                          public infobars::InfoBarManager::Observer,
+                          public content::WebContentsObserver {
  public:
   TabSharingUIViews(const content::DesktopMediaID& media_id,
                     base::string16 app_name);
@@ -69,6 +71,10 @@ class TabSharingUIViews : public TabSharingUI,
   // InfoBarManager::Observer:
   void OnInfoBarRemoved(infobars::InfoBar* infobar, bool animate) override;
 
+  // WebContentsObserver:
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
+
  private:
   void CreateInfobarsForAllTabs();
   void CreateInfobarForWebContents(content::WebContents* contents);