Make RenderFrameHostManager swap RenderFrameHosts, not RenderViewHosts.

content/renderer/dom_serializer_browsertest.cc

 // Copyright (c) 2010 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/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/containers/hash_tables.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 33 matching lines @@
 using blink::WebNodeCollection;
 using blink::WebNodeList;
 using blink::WebPageSerializer;
 using blink::WebPageSerializerClient;
 using blink::WebNode;
 using blink::WebString;
 using blink::WebURL;
 using blink::WebView;
 using blink::WebVector;
 
+namespace {
+
+// The first RenderFrame is routing ID 1, and the first RenderView is 2.
+const int kRenderViewRoutingId = 2;
+
+}
+
 namespace content {
 
 // Iterate recursively over sub-frames to find one with with a given url.
 WebFrame* FindSubFrameByURL(WebView* web_view, const GURL& url) {
   if (!web_view->mainFrame())
     return NULL;
 
   std::vector<WebFrame*> stack;
   stack.push_back(web_view->mainFrame());
 
@@ skipping 152 matching lines @@
   }
 
   const std::string& GetSerializedContentForFrame(
       const GURL& frame_url) {
     return serialized_frame_map_[frame_url.spec()];
   }
 
   RenderView* GetRenderView() {
     // We could have the test on the UI thread get the WebContent's routing ID,
     // but we know this will be the first RV so skip that and just hardcode it.
-    return RenderView::FromRoutingID(1);
+    return RenderView::FromRoutingID(kRenderViewRoutingId);
   }
 
   WebView* GetWebView() {
     return GetRenderView()->GetWebView();
   }
 
   WebFrame* GetMainFrame() {
     return GetWebView()->mainFrame();
   }
 
@@ skipping 765 matching lines @@
   NavigateToURL(shell(), file_url);
 
   PostTaskToInProcessRendererAndWait(
         base::Bind(
             &DomSerializerTests::
                 SubResourceForElementsInNonHTMLNamespaceOnRenderer,
             base::Unretained(this), file_url));
 }
 
 }  // namespace content