Add a menu item to content_shell to open devtools to make it more discoverable.

content/shell/shell.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/shell/shell.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
+#include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
+#include "content/public/browser/devtools_http_handler.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
+#include "content/shell/shell_browser_main_parts.h"
+#include "content/shell/shell_content_browser_client.h"
+#include "content/shell/shell_devtools_delegate.h"
 #include "content/shell/shell_javascript_dialog_creator.h"
 #include "content/shell/shell_messages.h"
 #include "content/shell/shell_switches.h"
 #include "ui/gfx/size.h"
 
 // Content area size for newly created windows.
 static const int kTestWindowWidth = 800;
 static const int kTestWindowHeight = 600;
 
 namespace content {
@@ skipping 114 matching lines @@
 
 void Shell::UpdateNavigationControls() {
   int current_index = web_contents_->GetController().GetCurrentEntryIndex();
   int max_index = web_contents_->GetController().GetEntryCount() - 1;
 
   PlatformEnableUIControl(BACK_BUTTON, current_index > 0);
   PlatformEnableUIControl(FORWARD_BUTTON, current_index < max_index);
   PlatformEnableUIControl(STOP_BUTTON, web_contents_->IsLoading());
 }
 
+void Shell::ShowDevTools() {
+  ShellContentBrowserClient* browser_client =
+      static_cast<ShellContentBrowserClient*>(
+          GetContentClient()->browser());
+  ShellDevToolsDelegate* delegate =
+      browser_client->shell_browser_main_parts()->devtools_delegate();
+  GURL url = delegate->devtools_http_handler()->GetFrontendURL(
+      web_contents()->GetRenderViewHost());
+  CreateNewWindow(
+      web_contents()->GetBrowserContext(),
+      url, NULL, MSG_ROUTING_NONE, NULL);
+}
+
 gfx::NativeView Shell::GetContentView() {
   if (!web_contents_.get())
     return NULL;
   return web_contents_->GetNativeView();
 }
 
 WebContents* Shell::OpenURLFromTab(WebContents* source,
                                    const OpenURLParams& params) {
   // The only one we implement for now.
   DCHECK(params.disposition == CURRENT_TAB);
@@ skipping 51 matching lines @@
         Details<std::pair<NavigationEntry*, bool> >(details).ptr();
 
     if (title->first) {
       string16 text = title->first->GetTitle();
       PlatformSetTitle(text);
     }
   }
 }
 
 }  // namespace content