Simplify devtools code on android and enable devtools for android content_shell.

content/browser/android/devtools_server.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/public/browser/android/devtools_server.h"
-
-#include <pwd.h>
-
-#include <cstring>
-
-#include "base/basictypes.h"
-#include "base/bind.h"
-#include "base/callback.h"
-#include "base/compiler_specific.h"
-#include "base/logging.h"
-#include "base/memory/singleton.h"
-#include "base/stringprintf.h"
-#include "content/public/browser/devtools_http_handler.h"
-#include "net/base/unix_domain_socket_posix.h"
-#include "net/url_request/url_request_context_getter.h"
-
-namespace content {
-
-namespace {
-
-const char kFrontEndURL[] =
-    "http://chrome-devtools-frontend.appspot.com/static/%s/devtools.html";
-const char kSocketName[] = "chrome_devtools_remote";
-
-bool UserCanConnect(uid_t uid, gid_t gid) {
-  struct passwd* creds = getpwuid(uid);
-  if (!creds || !creds->pw_name) {
-    LOG(WARNING) << "DevToolsServer: can't obtain creds for uid " << uid;
-    return false;
-  }
-  if (gid == uid &&
-      (strcmp("root", creds->pw_name) == 0 ||
-       strcmp("shell", creds->pw_name) == 0)) {
-    return true;
-  }
-  LOG(WARNING) << "DevToolsServer: connection attempt from " << creds->pw_name;
-  return false;
-}
-
-class DevToolsServerImpl : public DevToolsServer {
- public:
-  static DevToolsServerImpl* GetInstance() {
-    return Singleton<DevToolsServerImpl>::get();
-  }
-
-  // DevToolsServer:
-  virtual void Init(const std::string& frontend_version,
-                    net::URLRequestContextGetter* url_request_context,
-                    const DelegateCreator& delegate_creator) OVERRIDE {
-    frontend_url_ = StringPrintf(kFrontEndURL, frontend_version.c_str());
-    url_request_context_ = url_request_context;
-    delegate_creator_ = delegate_creator;
-  }
-
-  virtual void Start() OVERRIDE {
-    Stop();
-    DCHECK(IsInitialized());
-    protocol_handler_ = DevToolsHttpHandler::Start(
-        new net::UnixDomainSocketWithAbstractNamespaceFactory(
-            kSocketName, base::Bind(&UserCanConnect)),
-        frontend_url_,
-        url_request_context_,
-        delegate_creator_.Run());
-  }
-
-  virtual void Stop() OVERRIDE {
-    if (protocol_handler_) {
-      // Note that the call to Stop() below takes care of |protocol_handler_|
-      // deletion.
-      protocol_handler_->Stop();
-      protocol_handler_ = NULL;
-    }
-  }
-
-  virtual bool IsInitialized() const OVERRIDE {
-    return !frontend_url_.empty() && url_request_context_;
-  }
-
-  virtual bool IsStarted() const OVERRIDE {
-    return protocol_handler_;
-  }
-
- private:
-  friend struct DefaultSingletonTraits<DevToolsServerImpl>;
-
-  DevToolsServerImpl() : protocol_handler_(NULL), url_request_context_(NULL) {}
-
-  virtual ~DevToolsServerImpl() {
-    Stop();
-  }
-
-  DevToolsHttpHandler* protocol_handler_;
-  std::string frontend_url_;
-  net::URLRequestContextGetter* url_request_context_;
-  DelegateCreator delegate_creator_;
-
-  DISALLOW_COPY_AND_ASSIGN(DevToolsServerImpl);
-};
-
-}  // namespace
-
-// static
-DevToolsServer* DevToolsServer::GetInstance() {
-  return DevToolsServerImpl::GetInstance();
-}
-
-}  // namespace content