DevTools: simplify http handler delegate as it is moving into content.

content/shell/browser/shell_devtools_frontend.cc

 // Copyright 2013 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/shell/browser/shell_devtools_frontend.h"
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/json/string_escape.h"
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "components/devtools_http_handler/devtools_http_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_client.h"
+#include "content/public/common/content_switches.h"
 #include "content/shell/browser/shell.h"
 #include "content/shell/browser/shell_browser_context.h"
 #include "content/shell/browser/shell_browser_main_parts.h"
 #include "content/shell/browser/shell_content_browser_client.h"
 #include "content/shell/browser/shell_devtools_manager_delegate.h"
 #include "content/shell/common/shell_switches.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_fetcher.h"
@@ skipping 55 matching lines @@
       base::Bind(&ShellDevToolsFrontend::CallClientFunction,
                  shell_devtools_, "DevToolsAPI.streamWrite",
                  base::Owned(id), base::Owned(chunkValue), nullptr));
   return num_bytes;
 }
 
 int ResponseWriter::Finish(const net::CompletionCallback& callback) {
   return net::OK;
 }
 
+static GURL GetFrontendURL() {
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
+  uint16_t port = 0;
+  if (command_line.HasSwitch(switches::kRemoteDebuggingPort)) {
+    int temp_port;
+    std::string port_str =
+        command_line.GetSwitchValueASCII(switches::kRemoteDebuggingPort);
+    if (base::StringToInt(port_str, &temp_port) &&
+        temp_port >= 0 && temp_port < 65535) {
+      port = static_cast<uint16_t>(temp_port);
+    } else {
+      DLOG(WARNING) << "Invalid http debugger port number " << temp_port;
+    }
+  }
+  return GURL(
+      base::StringPrintf("http://127.0.0.1:%d/devtools/inspector.html", port));
+}
+
 }  // namespace
 
 // This constant should be in sync with
 // the constant at devtools_ui_bindings.cc.
 const size_t kMaxMessageChunkSize = IPC::Channel::kMaximumMessageSize / 4;
 
 // static
 ShellDevToolsFrontend* ShellDevToolsFrontend::Show(
     WebContents* inspected_contents) {
   Shell* shell = Shell::CreateNewWindow(inspected_contents->GetBrowserContext(),
                                         GURL(),
                                         NULL,
                                         gfx::Size());
   ShellDevToolsFrontend* devtools_frontend = new ShellDevToolsFrontend(
       shell,
       inspected_contents);
-
-  devtools_http_handler::DevToolsHttpHandler* http_handler =
-      ShellContentBrowserClient::Get()
-          ->shell_browser_main_parts()
-          ->devtools_http_handler();
-  shell->LoadURL(http_handler->GetFrontendURL("/devtools/inspector.html"));
-
+  shell->LoadURL(GetFrontendURL());
   return devtools_frontend;
 }
 
 void ShellDevToolsFrontend::Activate() {
   frontend_shell_->ActivateContents(web_contents());
 }
 
 void ShellDevToolsFrontend::Focus() {
   web_contents()->Focus();
 }
@@ skipping 239 matching lines @@
   CallClientFunction("DevToolsAPI.embedderMessageAck",
                      &id_value, arg, nullptr);
 }
 
 void ShellDevToolsFrontend::AgentHostClosed(
     DevToolsAgentHost* agent_host, bool replaced) {
   frontend_shell_->Close();
 }
 
 }  // namespace content