Push the chrome browser of the selected tab to the front of the screen,

chrome/browser/ui/views/desktop_capture/desktop_media_picker_views.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/desktop_capture/desktop_media_picker_views.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "chrome/browser/media/desktop_media_list.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/views/desktop_capture/desktop_media_list_view.h"
 #include "chrome/browser/ui/views/desktop_capture/desktop_media_source_view.h"
 #include "chrome/browser/ui/views/desktop_media_picker_views_deprecated.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/grit/google_chrome_strings.h"
 #include "components/constrained_window/constrained_window_views.h"
 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_frame_host.h"
@@ skipping 288 matching lines @@
   DesktopMediaSourceView* selection =
       list_views_[pane_->selected_tab_index()]->GetSelection();
 
   // Ok button should only be enabled when a source is selected.
   DCHECK(selection);
   DesktopMediaID source = selection->source_id();
   source.audio_share = audio_share_checkbox_ &&
                        audio_share_checkbox_->visible() &&
                        audio_share_checkbox_->checked();
 
-  // If the media source is an tab, activate it.
   if (source.type == DesktopMediaID::TYPE_WEB_CONTENTS) {
+    // Activate the selected tab and bring the browser window for the selected
+    // tab to the front.
     content::WebContents* tab = content::WebContents::FromRenderFrameHost(
         content::RenderFrameHost::FromID(
             source.web_contents_id.render_process_id,
             source.web_contents_id.main_render_frame_id));
-    if (tab)
+    if (tab) {
       tab->GetDelegate()->ActivateContents(tab);
+      Browser* browser = chrome::FindBrowserWithWebContents(tab);
+      if (browser) {

[msw, 2016/06/02 22:31:43]

optional nit: if (browser && browser->window()) browser->window()->Activate();

[GeorgeZ, 2016/06/03 15:51:19]

Done.

+        BrowserWindow* window = browser->window();
+        if (window)
+          window->Activate();
+      }
+    }
   }
 
   if (parent_)
     parent_->NotifyDialogResult(source);
 
   // Return true to close the window.
   return true;
 }
 
 void DesktopMediaPickerDialogView::DeleteDelegate() {
@@ skipping 95 matching lines @@
 
 // static
 std::unique_ptr<DesktopMediaPicker> DesktopMediaPicker::Create() {
   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
           extensions::switches::kDisableDesktopCapturePickerOldUI)) {
     return std::unique_ptr<DesktopMediaPicker>(
         new deprecated::DesktopMediaPickerViews());
   }
   return std::unique_ptr<DesktopMediaPicker>(new DesktopMediaPickerViews());
 }