Add inspect command to skydb

sky/tools/debugger/prompt/prompt.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 "base/bind.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/application/application_runner_chromium.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
@@ skipping 55 matching lines @@
       return true;
     }
     if (command == "trace") {
       ToggleTracing();
       return true;
     }
     if (command == "reload") {
       Reload();
       return true;
     }
+    if (command == "inspect") {
+      Inspect();
+      return true;
+    }
     if (command.size() == 1) {
       char c = command[0];
       if (c == 'h')
         PrintHelp();
       else if (c == 'q')
         Quit();
       else if (c == 'r')
         Reload();
       else
         std::cout << "Unknown command: " << c << std::endl;
@@ skipping 18 matching lines @@
   void ScheduleWaitForInput() {
     base::MessageLoop::current()->PostTask(FROM_HERE,
         base::Bind(&Prompt::WaitForInput, weak_ptr_factory_.GetWeakPtr()));
   }
 
   void PrintHelp() {
     std::cout
       << "Sky Debugger" << std::endl
       << "============" << std::endl
       << "Type a URL to load in the debugger, enter to reload." << std::endl
-      << "Commands: help   -- Help" << std::endl
-      << "          trace  -- Capture a trace" << std::endl
-      << "          reload -- Reload the current page" << std::endl
-      << "          q      -- Quit" << std::endl;
+      << "Commands: help    -- Help" << std::endl
+      << "          trace   -- Capture a trace" << std::endl
+      << "          reload  -- Reload the current page" << std::endl
+      << "          inspect -- Inspect the current page" << std::endl
+      << "          q       -- Quit" << std::endl;
   }
 
   void Reload() {
     debugger_->NavigateToURL(url_);
   }
 
+  void Inspect() {
+    debugger_->InjectInspector();
+    std::cout
+      << "Open the following URL in Chrome:" << std::endl
+      << "chrome-devtools://devtools/bundled/devtools.html?ws=localhost:9898"
+      << std::endl;
+  }
+
   void Quit() {
     std::cout << "quitting" << std::endl;
     exit(0);
   }
 
   void ToggleTracing() {
     if (is_tracing_) {
       std::cout << "Stopping trace (writing to sky_viewer.trace)" << std::endl;
       tracing_->Stop();
     } else {
@@ skipping 12 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(Prompt);
 };
 
 }  // namespace debugger
 }  // namespace sky
 
 MojoResult MojoMain(MojoHandle shell_handle) {
   mojo::ApplicationRunnerChromium runner(new sky::debugger::Prompt);
   return runner.Run(shell_handle);
 }