[DevTools] Fix out of process iframes not working on chrome://inspect.

content/browser/devtools/site_per_process_devtools_browsertest.cc

 // Copyright (c) 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/run_loop.h"
 #include "build/build_config.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/site_per_process_browsertest.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/devtools_agent_host.h"
@@ skipping 82 matching lines @@
   replace_host.SetHostStr("foo.com");
   cross_site_url = cross_site_url.ReplaceComponents(replace_host);
   NavigateFrameToURL(root->child_at(0), cross_site_url);
 
   list = DevToolsAgentHost::GetOrCreateAll();
   EXPECT_EQ(2U, list.size());
   EXPECT_EQ(DevToolsAgentHost::kTypePage, list[0]->GetType());
   EXPECT_EQ(main_url.spec(), list[0]->GetURL().spec());
   EXPECT_EQ(DevToolsAgentHost::kTypePage, list[1]->GetType());
   EXPECT_EQ(cross_site_url.spec(), list[1]->GetURL().spec());
+  EXPECT_EQ(std::string(), list[0]->GetParentId());
+  EXPECT_EQ(list[0]->GetId(), list[1]->GetParentId());
+  EXPECT_NE(list[1]->GetId(), list[0]->GetId());
 
   // Attaching to both agent hosts.
   scoped_refptr<DevToolsAgentHost> child_host = list[1];
   TestClient child_client;
   child_host->AttachClient(&child_client);
   scoped_refptr<DevToolsAgentHost> parent_host = list[0];
   TestClient parent_client;
   parent_host->AttachClient(&parent_client);
 
   // Send message to parent and child frames and get result back.
@@ skipping 47 matching lines @@
   // Load cross-site page into iframe.
   GURL::Replacements replace_host;
   GURL cross_site_url(embedded_test_server()->GetURL("/title2.html"));
   replace_host.SetHostStr("foo.com");
   cross_site_url = cross_site_url.ReplaceComponents(replace_host);
   NavigateFrameToURL(root->child_at(0), cross_site_url);
 
   child_frame_agent =
       DevToolsAgentHost::GetOrCreateFor(child->current_frame_host());
   EXPECT_NE(page_agent.get(), child_frame_agent.get());
+  EXPECT_EQ(child_frame_agent->GetParentId(), page_agent->GetId());
+  EXPECT_NE(child_frame_agent->GetId(), page_agent->GetId());
 }
 
 IN_PROC_BROWSER_TEST_F(SitePerProcessDevToolsBrowserTest,
     AgentHostForPageEqualsOneForMainFrame) {
   host_resolver()->AddRule("*", "127.0.0.1");
   GURL main_url(embedded_test_server()->GetURL("/site_per_process_main.html"));
   NavigateToURL(shell(), main_url);
 
   // It is safe to obtain the root frame tree node here, as it doesn't change.
   FrameTreeNode* root =
       static_cast<WebContentsImpl*>(shell()->web_contents())->
           GetFrameTree()->root();
   FrameTreeNode* child = root->child_at(0);
 
   // Load cross-site page into iframe.
   GURL::Replacements replace_host;
   GURL cross_site_url(embedded_test_server()->GetURL("/title2.html"));
   replace_host.SetHostStr("foo.com");
   cross_site_url = cross_site_url.ReplaceComponents(replace_host);
   NavigateFrameToURL(child, cross_site_url);
 
   // First ask for child frame, then for main frame.
   scoped_refptr<DevToolsAgentHost> child_frame_agent =
       DevToolsAgentHost::GetOrCreateFor(child->current_frame_host());
   scoped_refptr<DevToolsAgentHost> main_frame_agent =
       DevToolsAgentHost::GetOrCreateFor(root->current_frame_host());
   EXPECT_NE(main_frame_agent.get(), child_frame_agent.get());
+  EXPECT_EQ(child_frame_agent->GetParentId(), main_frame_agent->GetId());
+  EXPECT_NE(child_frame_agent->GetId(), main_frame_agent->GetId());
 
   // Agent for web contents should be the the main frame's one.
   scoped_refptr<DevToolsAgentHost> page_agent =
       DevToolsAgentHost::GetOrCreateFor(shell()->web_contents());
   EXPECT_EQ(page_agent.get(), main_frame_agent.get());
 }
 
 }  // namespace content