Create a new RenderFrameHost per child frame when --site-per-process is enabled.

content/browser/web_contents/web_contents_impl_browsertest.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 "base/values.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/load_notification_details.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_details.h"
@@ skipping 206 matching lines @@
 // the renderer and builds proper frame tree.
 IN_PROC_BROWSER_TEST_F(WebContentsImplBrowserTest, FrameTree) {
   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 
   NavigateToURL(shell(),
                 embedded_test_server()->GetURL("/frame_tree/top.html"));
 
   WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell()->web_contents());
   RenderViewHostImpl* rvh = static_cast<RenderViewHostImpl*>(
       wc->GetRenderViewHost());
-  FrameTreeNode* root = wc->GetFrameTreeRootForTesting();
+  FrameTreeNode* root = wc->GetFrameTree()->GetRootForTesting();
 
   // Check that the root node is properly created with the frame id of the
   // initial navigation.
   EXPECT_EQ(3UL, root->child_count());
   EXPECT_EQ(std::string(), root->frame_name());
   EXPECT_EQ(rvh->main_frame_id(), root->frame_id());
 
   EXPECT_EQ(2UL, root->child_at(0)->child_count());
   EXPECT_STREQ("1-1-name", root->child_at(0)->frame_name().c_str());
 
   // Verify the deepest node exists and has the right name.
   EXPECT_EQ(2UL, root->child_at(2)->child_count());
   EXPECT_EQ(1UL, root->child_at(2)->child_at(1)->child_count());
   EXPECT_EQ(0UL, root->child_at(2)->child_at(1)->child_at(0)->child_count());
   EXPECT_STREQ("3-1-id",
       root->child_at(2)->child_at(1)->child_at(0)->frame_name().c_str());
 
   // Navigate to about:blank, which should leave only the root node of the frame
   // tree in the browser process.
   NavigateToURL(shell(), embedded_test_server()->GetURL("/title1.html"));
 
-  root = wc->GetFrameTreeRootForTesting();
+  root = wc->GetFrameTree()->GetRootForTesting();
   EXPECT_EQ(0UL, root->child_count());
   EXPECT_EQ(std::string(), root->frame_name());
   EXPECT_EQ(rvh->main_frame_id(), root->frame_id());
 }
 
 // TODO(sail): enable this for MAC when auto resizing of WebContentsViewCocoa is
 // fixed.
 // TODO(shrikant): enable this for Windows when issue with
 // force-compositing-mode is resolved (http://crbug.com/281726).
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_ANDROID)
@@ skipping 53 matching lines @@
   // RenderViewSizeObserver resizes WebContentsView in NavigateToPendingEntry,
   // so both WebContentsView and RenderWidgetHostView adopt this new size.
   new_size.Enlarge(size_insets.width(), size_insets.height());
   EXPECT_EQ(new_size,
             shell()->web_contents()->GetRenderWidgetHostView()->GetViewBounds().
                 size());
   EXPECT_EQ(new_size, shell()->web_contents()->GetView()->GetContainerSize());
 }
 
 }  // namespace content