[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 415 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.
+  DevToolsManager::GetInstance()->AgentHostCreated(this);
 }
 
 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 112 matching lines @@
   // extensions::ProcessManager no longer relies on this notification.
   DevToolsAgentHostImpl::NotifyCallbacks(this, false);
 }
 
 RenderFrameDevToolsAgentHost::~RenderFrameDevToolsAgentHost() {
   Instances::iterator it = std::find(g_instances.Get().begin(),
                                      g_instances.Get().end(),
                                      this);
   if (it != g_instances.Get().end())
     g_instances.Get().erase(it);
+  DevToolsManager::GetInstance()->AgentHostDestroyed(this);
 }
 
 void RenderFrameDevToolsAgentHost::ReadyToCommitNavigation(
     NavigationHandle* navigation_handle) {
   // CommitPending may destruct |this|.
   scoped_refptr<RenderFrameDevToolsAgentHost> protect(this);
 
   // TODO(clamy): Switch RenderFrameDevToolsAgentHost to always buffer messages
   // until ReadyToCommitNavigation is called, now that it is also called in
   // non-PlzNavigate mode.
@@ skipping 362 matching lines @@
   WebContentsImpl* contents = static_cast<WebContentsImpl*>(web_contents());
   if (!contents)
     return "";
   contents = contents->GetOuterWebContents();
   if (contents)
     return DevToolsAgentHost::GetOrCreateFor(contents)->GetId();
   return "";
 }
 
 std::string RenderFrameDevToolsAgentHost::GetType() {
-  DevToolsManager* manager = DevToolsManager::GetInstance();
-  if (manager->delegate() && current_) {
-    std::string result = manager->delegate()->GetTargetType(current_->host());
+  DevToolsManagerDelegate* manager_delegate =
+      DevToolsManager::GetInstance()->GetDelegate();
+  if (manager_delegate && current_) {
+    std::string result = manager_delegate->GetTargetType(current_->host());
     if (!result.empty())
       return result;
   }
   if (IsChildFrame())
     return kTypeFrame;
   return kTypePage;
 }
 
 std::string RenderFrameDevToolsAgentHost::GetTitle() {
-  DevToolsManager* manager = DevToolsManager::GetInstance();
-  if (manager->delegate() && current_) {
-    std::string result = manager->delegate()->GetTargetTitle(current_->host());
+  DevToolsManagerDelegate* manager_delegate =
+      DevToolsManager::GetInstance()->GetDelegate();
+  if (manager_delegate && current_) {
+    std::string result = manager_delegate->GetTargetTitle(current_->host());
     if (!result.empty())
       return result;
   }
   content::WebContents* web_contents = GetWebContents();
   if (web_contents)
     return base::UTF16ToUTF8(web_contents->GetTitle());
   return GetURL().spec();
 }
 
 std::string RenderFrameDevToolsAgentHost::GetDescription() {
-  DevToolsManager* manager = DevToolsManager::GetInstance();
-  if (manager->delegate() && current_)
-    return manager->delegate()->GetTargetDescription(current_->host());
+  DevToolsManagerDelegate* manager_delegate =
+      DevToolsManager::GetInstance()->GetDelegate();
+  if (manager_delegate && current_)
+    return manager_delegate->GetTargetDescription(current_->host());
   return "";
 }
 
 GURL RenderFrameDevToolsAgentHost::GetURL() {
   // Order is important here.
   WebContents* web_contents = GetWebContents();
   if (web_contents && !IsChildFrame())
     return web_contents->GetVisibleURL();
   if (pending_)
     return pending_->host()->GetLastCommittedURL();
@@ skipping 106 matching lines @@
     RenderFrameHost* host) {
   return (current_ && current_->host() == host) ||
       (pending_ && pending_->host() == host);
 }
 
 bool RenderFrameDevToolsAgentHost::IsChildFrame() {
   return current_ && current_->host()->GetParent();
 }
 
 }  // namespace content