DevTools: Extract target discovery and manipulation from DevToolsHttpHandlerImpl

content/shell/browser/shell_devtools_delegate.cc

Index: content/shell/browser/shell_devtools_delegate.cc
diff --git a/content/shell/browser/shell_devtools_delegate.cc b/content/shell/browser/shell_devtools_delegate.cc
index c8d256f61256127e8668ef7e235ffff04d03eb6a..8e47884953916559632960e652a6cd10da1e302c 100644
--- a/content/shell/browser/shell_devtools_delegate.cc
+++ b/content/shell/browser/shell_devtools_delegate.cc
@@ -9,12 +9,18 @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/utf_string_conversions.h"
+#include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/devtools_http_handler.h"
+#include "content/public/browser/favicon_status.h"
+#include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/shell/browser/shell.h"
 #include "grit/shell_resources.h"
+#include "net/base/escape.h"
 #include "net/socket/tcp_listen_socket.h"
 #include "ui/base/resource/resource_bundle.h"
 
@@ -23,8 +29,14 @@
 #include "net/socket/unix_domain_socket_posix.h"
 #endif
 
+using content::DevToolsAgentHost;
+using content::RenderViewHost;
+using content::WebContents;
+
 namespace {
 
+const char kTargetTypePage[] = "page";
+
 net::StreamListenSocketFactory* CreateSocketFactory() {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 #if defined(OS_ANDROID)
@@ -53,6 +65,72 @@ net::StreamListenSocketFactory* CreateSocketFactory() {
   return new net::TCPListenSocketFactory("127.0.0.1", port);
 #endif
 }
+
+class Target : public content::DevToolsTarget {
+ public:
+  explicit Target(WebContents* web_contents);
+
+  virtual std::string GetId() const OVERRIDE { return id_; }
+  virtual std::string GetType() const OVERRIDE { return kTargetTypePage; }
+  virtual std::string GetTitle() const OVERRIDE { return title_; }
+  virtual std::string GetDescription() const OVERRIDE { return std::string(); }
+  virtual GURL GetUrl() const OVERRIDE { return url_; }
+  virtual GURL GetFaviconUrl() const OVERRIDE { return favicon_url_; }
+  virtual base::TimeTicks GetLastActivityTime() const OVERRIDE {
+    return last_activity_time_;
+  }
+  virtual bool IsAttached() const OVERRIDE {
+    return agent_host_->IsAttached();
+  }
+  virtual scoped_refptr<DevToolsAgentHost> GetAgentHost() const OVERRIDE {
+    return agent_host_;
+  }
+  virtual bool Activate() const OVERRIDE;
+  virtual bool Close() const OVERRIDE;
+
+ private:
+  virtual ~Target() {}
+
+  scoped_refptr<DevToolsAgentHost> agent_host_;
+  std::string id_;
+  std::string title_;
+  GURL url_;
+  GURL favicon_url_;
+  base::TimeTicks last_activity_time_;
+};
+
+Target::Target(WebContents* web_contents) {
+  agent_host_ =
+      DevToolsAgentHost::GetOrCreateFor(web_contents->GetRenderViewHost());
+  id_ = agent_host_->GetId();
+  title_ = UTF16ToUTF8(net::EscapeForHTML(web_contents->GetTitle()));
+  url_ = web_contents->GetURL();
+  content::NavigationController& controller = web_contents->GetController();
+  content::NavigationEntry* entry = controller.GetActiveEntry();
+  if (entry != NULL && entry->GetURL().is_valid())
+    favicon_url_ = entry->GetFavicon().url;
+  last_activity_time_ = web_contents->GetLastSelectedTime();
+}
+
+bool Target::Activate() const {
+  RenderViewHost* rvh = agent_host_->GetRenderViewHost();
+  if (!rvh)
+    return false;
+  WebContents* web_contents = WebContents::FromRenderViewHost(rvh);
+  if (!web_contents)
+    return false;
+  web_contents->GetDelegate()->ActivateContents(web_contents);
+  return true;
+}
+
+bool Target::Close() const {
+  RenderViewHost* rvh = agent_host_->GetRenderViewHost();
+  if (!rvh)
+    return false;
+  rvh->ClosePage();
+  return true;
+}
+
 }  // namespace
 
 namespace content {
@@ -90,23 +168,26 @@ std::string ShellDevToolsDelegate::GetPageThumbnailData(const GURL& url) {
   return std::string();
 }
 
-RenderViewHost* ShellDevToolsDelegate::CreateNewTarget() {
+scoped_refptr<DevToolsTarget> ShellDevToolsDelegate::CreateNewTarget() {
   Shell* shell = Shell::CreateNewWindow(browser_context_,
                                         GURL(kAboutBlankURL),
                                         NULL,
                                         MSG_ROUTING_NONE,
                                         gfx::Size());
-  return shell->web_contents()->GetRenderViewHost();
+  return new Target(shell->web_contents());
 }
 
-DevToolsHttpHandlerDelegate::TargetType
-ShellDevToolsDelegate::GetTargetType(RenderViewHost*) {
-  return kTargetTypeTab;
-}
-
-std::string ShellDevToolsDelegate::GetViewDescription(
-    content::RenderViewHost*) {
-  return std::string();
+void ShellDevToolsDelegate::EnumerateTargets(TargetCallback callback) {
+  TargetList targets;
+  std::vector<RenderViewHost*> rvh_list =
+      content::DevToolsAgentHost::GetValidRenderViewHosts();
+  for (std::vector<RenderViewHost*>::iterator it = rvh_list.begin();
+       it != rvh_list.end(); ++it) {
+    WebContents* web_contents = WebContents::FromRenderViewHost(*it);
+    if (web_contents)
+      targets.push_back(new Target(web_contents));
+  }
+  callback.Run(targets);
 }
 
 scoped_ptr<net::StreamListenSocket>