[DevTools] Implement Target.setDiscoverTargets method.

content/browser/devtools/render_frame_devtools_agent_host.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/browser/devtools/render_frame_devtools_agent_host.h"
 
 #include <tuple>
 #include <utility>
 
 #include "base/guid.h"
@@ skipping 354 matching lines @@
   // Note Page.setControlNavigations is intended to control navigations in the
   // main frame and all child frames and |page_handler_| only exists for the
   // main frame.
   if (agent_host && agent_host->page_handler_) {
     return agent_host->page_handler_->CreateThrottleForNavigation(
         navigation_handle);
   }
   return nullptr;
 }
 
+// static
+void RenderFrameDevToolsAgentHost::WebContentsCreated(
+    WebContents* web_contents) {
+  if (ShouldForceCreation()) {
+    // Force agent host.
+    DevToolsAgentHost::GetOrCreateFor(web_contents);
+  }
+}
+
 RenderFrameDevToolsAgentHost::RenderFrameDevToolsAgentHost(
     RenderFrameHostImpl* host)
     : DevToolsAgentHostImpl(base::GenerateGUID()),
       browser_handler_(new devtools::browser::BrowserHandler()),
       dom_handler_(new devtools::dom::DOMHandler()),
       input_handler_(new devtools::input::InputHandler()),
       inspector_handler_(new devtools::inspector::InspectorHandler()),
       io_handler_(new devtools::io::IOHandler(GetIOContext())),
       network_handler_(new devtools::network::NetworkHandler()),
       page_handler_(nullptr),
@@ skipping 41 matching lines @@
   CommitPending();
   WebContentsObserver::Observe(WebContents::FromRenderFrameHost(host));
 
   if (web_contents() && web_contents()->GetCrashedStatus() !=
       base::TERMINATION_STATUS_STILL_RUNNING) {
       current_frame_crashed_ = true;
   }
 
   g_instances.Get().push_back(this);
   AddRef();  // Balanced in RenderFrameHostDestroyed.
+  NotifyCreated();
 }
 
 void RenderFrameDevToolsAgentHost::SetPending(RenderFrameHostImpl* host) {
   DCHECK(!pending_);
   current_frame_crashed_ = false;
   pending_.reset(new FrameHostHolder(this, host));
   if (IsAttached())
     pending_->Reattach(current_.get());
 
   // Can only be null in constructor.
@@ skipping 640 matching lines @@
     RenderFrameHost* host) {
   return (current_ && current_->host() == host) ||
       (pending_ && pending_->host() == host);
 }
 
 bool RenderFrameDevToolsAgentHost::IsChildFrame() {
   return current_ && current_->host()->GetParent();
 }
 
 }  // namespace content