Adds remote devtools support to cast_shell.

chromecast/shell/browser/devtools/cast_dev_tools_delegate.cc

+// Copyright 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 "chromecast/shell/browser/devtools/cast_dev_tools_delegate.h"
+
+#include "base/files/file_path.h"
+#include "base/strings/utf_string_conversions.h"
+#include "content/public/browser/devtools_agent_host.h"
+#include "content/public/browser/devtools_target.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/browser/web_contents_delegate.h"
+#include "grit/shell_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+
+namespace chromecast {
+namespace shell {
+
+namespace {
+
+const char kTargetTypePage[] = "page";
+
+class Target : public content::DevToolsTarget {
+ public:
+  explicit Target(content::WebContents* web_contents);
+
+  virtual std::string GetId() const OVERRIDE { return id_; }
+  virtual std::string GetParentId() const OVERRIDE { return std::string(); }
+  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<content::DevToolsAgentHost> GetAgentHost()
+      const OVERRIDE {
+    return agent_host_;
+  }
+  virtual bool Activate() const OVERRIDE;
+  virtual bool Close() const OVERRIDE;
+
+ private:
+  scoped_refptr<content::DevToolsAgentHost> agent_host_;
+  std::string id_;
+  std::string title_;
+  GURL url_;
+  GURL favicon_url_;
+  base::TimeTicks last_activity_time_;

[damienv1, 2014/08/14 15:57:19]

DISALLOW_COPY_AND_ASSIGN missing ? (I didn't check whether copy is allowed).

[gunsch, 2014/08/14 16:26:43]

Done.

+};
+
+Target::Target(content::WebContents* web_contents) {
+  agent_host_ = content::DevToolsAgentHost::GetOrCreateFor(web_contents);
+  id_ = agent_host_->GetId();
+  title_ = base::UTF16ToUTF8(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->GetLastActiveTime();
+}
+
+bool Target::Activate() const {
+  content::WebContents* web_contents = agent_host_->GetWebContents();
+  if (!web_contents)
+    return false;
+  web_contents->GetDelegate()->ActivateContents(web_contents);
+  return true;
+}
+
+bool Target::Close() const {
+  content::WebContents* web_contents = agent_host_->GetWebContents();
+  if (!web_contents)
+    return false;
+  web_contents->GetRenderViewHost()->ClosePage();
+  return true;
+}
+
+}  // namespace
+
+CastDevToolsDelegate::CastDevToolsDelegate() {
+}
+
+CastDevToolsDelegate::~CastDevToolsDelegate() {
+}
+
+std::string CastDevToolsDelegate::GetDiscoveryPageHTML() {
+#if defined(OS_ANDROID)
+  return std::string();

[damienv1, 2014/08/14 15:57:19]

Why is it done differently for Android ? (might deserve a comment).

[gunsch, 2014/08/14 16:26:43]

Done.

+#else
+  return ResourceBundle::GetSharedInstance().GetRawDataResource(
+      IDR_CAST_SHELL_DEVTOOLS_DISCOVERY_PAGE).as_string();
+#endif  // defined(OS_ANDROID)
+}
+
+bool CastDevToolsDelegate::BundlesFrontendResources() {
+#if defined(OS_ANDROID)
+  return false;

[damienv1, 2014/08/14 16:00:37]

Same question: why is the underlying reason for this ?

[gunsch, 2014/08/14 16:26:43]

Left a comment. See also:
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/browser/ui/...

this code forces using a remote URL when using the remote devtools UI (used for
Unix domain socket) instead of direct access with hosted resources by URL (like
we do for Chromecast).

+#else
+  return true;
+#endif  // defined(OS_ANDROID)
+}
+
+base::FilePath CastDevToolsDelegate::GetDebugFrontendDir() {
+  return base::FilePath();
+}
+
+std::string CastDevToolsDelegate::GetPageThumbnailData(const GURL& url) {
+  return "";
+}
+
+scoped_ptr<content::DevToolsTarget> CastDevToolsDelegate::CreateNewTarget(
+    const GURL& url) {
+  return scoped_ptr<content::DevToolsTarget>();
+}
+
+void CastDevToolsDelegate::EnumerateTargets(TargetCallback callback) {
+  TargetList targets;
+  std::vector<content::WebContents*> wc_list =
+      content::DevToolsAgentHost::GetInspectableWebContents();
+  for (std::vector<content::WebContents*>::iterator it = wc_list.begin();
+       it != wc_list.end();
+       ++it) {
+    targets.push_back(new Target(*it));
+  }
+  callback.Run(targets);
+}
+
+scoped_ptr<net::StreamListenSocket>
+CastDevToolsDelegate::CreateSocketForTethering(
+    net::StreamListenSocket::Delegate* delegate,
+    std::string* name) {
+  return scoped_ptr<net::StreamListenSocket>();
+}
+
+}  // namespace shell
+}  // namespace chromecast