Revert of [HBD] Intercept Flash navigations in popup windows.

chrome/browser/plugins/flash_download_interception.cc

 // Copyright 2016 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/plugins/flash_download_interception.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
@@ skipping 98 matching lines @@
   }
 
   return false;
 }
 
 // static
 std::unique_ptr<NavigationThrottle>
 FlashDownloadInterception::MaybeCreateThrottleFor(NavigationHandle* handle) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
+  // Never intercept Flash Download navigations in a new window.
+  if (handle->GetWebContents()->HasOpener())
+    return nullptr;
+
   // Browser initiated navigations like the Back button or the context menu
   // should never be intercepted.
   if (!handle->IsRendererInitiated())
     return nullptr;
 
   // The source URL may be empty, it's a new tab. Intercepting that navigation
   // would lead to a blank new tab, which would be bad.
   GURL source_url = handle->GetWebContents()->GetLastCommittedURL();
   if (source_url.is_empty())
     return nullptr;
 
   Profile* profile = Profile::FromBrowserContext(
       handle->GetWebContents()->GetBrowserContext());
   HostContentSettingsMap* host_content_settings_map =
       HostContentSettingsMapFactory::GetForProfile(profile);
   if (!ShouldStopFlashDownloadAction(host_content_settings_map, source_url,
                                      handle->GetURL(),
                                      handle->HasUserGesture())) {
     return nullptr;
   }
 
   return base::MakeUnique<navigation_interception::InterceptNavigationThrottle>(
       handle, base::Bind(&InterceptNavigation, source_url), true);
 }