PlzNavigate: Speculatively spawns a renderer process for navigations.

content/test/test_web_contents.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/test/test_web_contents.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "content/browser/browser_url_handler_impl.h"
@@ skipping 37 matching lines @@
 TestRenderFrameHost* TestWebContents::GetMainFrame() {
   return static_cast<TestRenderFrameHost*>(WebContentsImpl::GetMainFrame());
 }
 
 TestRenderViewHost* TestWebContents::GetRenderViewHost() const {
     return static_cast<TestRenderViewHost*>(
         WebContentsImpl::GetRenderViewHost());
 }
 
 TestRenderFrameHost* TestWebContents::GetPendingMainFrame() const {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableBrowserSideNavigation)) {
+    return static_cast<TestRenderFrameHost*>(
+        GetRenderManager()->speculative_render_frame_host_.get());
+  }
   return static_cast<TestRenderFrameHost*>(
       GetRenderManager()->pending_frame_host());
 }
 
 void TestWebContents::TestDidNavigate(RenderFrameHost* render_frame_host,
                                       int page_id,
                                       const GURL& url,
                                       ui::PageTransition transition) {
   TestDidNavigateWithReferrer(render_frame_host,
                               page_id,
@@ skipping 183 matching lines @@
 }
 
 void TestWebContents::ShowCreatedWidget(int route_id,
                                         const gfx::Rect& initial_pos) {
 }
 
 void TestWebContents::ShowCreatedFullscreenWidget(int route_id) {
 }
 
 }  // namespace content