Reland of Add a NavigationThrottle to the public content/ interface

content/public/browser/content_browser_client.cc

 // Copyright (c) 2012 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 "content/public/browser/content_browser_client.h"
 
 #include "base/files/file_path.h"
 #include "content/public/browser/client_certificate_delegate.h"
 #include "content/public/common/sandbox_type.h"
 #include "ui/gfx/image/image_skia.h"
@@ skipping 341 matching lines @@
   return nullptr;
 }
 
 void ContentBrowserClient::OpenURL(
     content::BrowserContext* browser_context,
     const content::OpenURLParams& params,
     const base::Callback<void(content::WebContents*)>& callback) {
   callback.Run(nullptr);
 }
 
+ScopedVector<NavigationThrottle>
+ContentBrowserClient::CreateThrottlesForNavigation(
+    NavigationHandle* navigation_handle) {
+  return ScopedVector<NavigationThrottle>();
+}
+
 #if defined(OS_WIN)
 const wchar_t* ContentBrowserClient::GetResourceDllName() {
   return nullptr;
 }
 
 base::string16 ContentBrowserClient::GetAppContainerSidForSandboxType(
     int sandbox_type) const {
   // Embedders should override this method and return different SIDs for each
   // sandbox type. Note: All content level tests will run child processes in the
   // same AppContainer.
   return base::string16(
       L"S-1-15-2-3251537155-1984446955-2931258699-841473695-1938553385-"
       L"924012148-129201922");
 }
 #endif
 
 #if defined(VIDEO_HOLE)
 ExternalVideoSurfaceContainer*
 ContentBrowserClient::OverrideCreateExternalVideoSurfaceContainer(
     WebContents* web_contents) {
   NOTREACHED() << "Hole-punching is not supported. See crbug.com/469348.";
   return nullptr;
 }
 #endif
 
 }  // namespace content