Use RenderProcessHost::Shutdown in test to avoid flakiness.

content/browser/frame_host/frame_tree_browsertest.cc

 // Copyright 2014 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 "base/command_line.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
@@ skipping 117 matching lines @@
   RenderViewHost* rvh = shell()->web_contents()->GetRenderViewHost();
   RenderFrameHostImpl* rfh =
       static_cast<RenderFrameHostImpl*>(rvh->GetMainFrame());
   EXPECT_TRUE(rvh->IsRenderViewLive());
   EXPECT_TRUE(rfh->IsRenderFrameLive());
 
   // Crash the renderer so that it doesn't send any FrameDetached messages.
   RenderProcessHostWatcher crash_observer(
       shell()->web_contents(),
       RenderProcessHostWatcher::WATCH_FOR_PROCESS_EXIT);
-  NavigateToURL(shell(), GURL(kChromeUICrashURL));
+  ASSERT_TRUE(
+      shell()->web_contents()->GetMainFrame()->GetProcess()->Shutdown(0, true));
   crash_observer.Wait();
 
   // The frame tree should be cleared.
   WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell()->web_contents());
   FrameTreeNode* root = wc->GetFrameTree()->root();
   EXPECT_EQ(0UL, root->child_count());
 
   // Ensure the view and frame aren't live anymore.
   EXPECT_FALSE(rvh->IsRenderViewLive());
   EXPECT_FALSE(rfh->IsRenderFrameLive());
@@ skipping 605 matching lines @@
   // Make sure we did a process transfer back to "b.is".
   EXPECT_EQ(
       " Site A ------------ proxies for B\n"
       "   +--Site B ------- proxies for A\n"
       "Where A = http://a.com/\n"
       "      B = http://b.is/",
       FrameTreeVisualizer().DepictFrameTree(root));
 }
 
 }  // namespace content