DevTools: migrate APU from dedicated commands to the inspector protocol.

chrome/browser/extensions/extension_devtools_bridge.cc

 // Copyright (c) 2010 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 "chrome/browser/extensions/extension_devtools_bridge.h"
 
+#include "base/json/json_writer.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
+#include "base/values.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/extensions/extension_devtools_events.h"
 #include "chrome/browser/extensions/extension_devtools_manager.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/extensions/extension_tabs_module.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/devtools_messages.h"
 
 ExtensionDevToolsBridge::ExtensionDevToolsBridge(int tab_id,
                                                  Profile* profile)
     : tab_id_(tab_id),
       profile_(profile),
       on_page_event_name_(
           ExtensionDevToolsEvents::OnPageEventNameForTab(tab_id)),
       on_tab_close_event_name_(
           ExtensionDevToolsEvents::OnTabCloseEventNameForTab(tab_id)) {
   extension_devtools_manager_ = profile_->GetExtensionDevToolsManager();
   DCHECK(extension_devtools_manager_.get());
 }
 
 ExtensionDevToolsBridge::~ExtensionDevToolsBridge() {
 }
 
+static std::string FormatDevToolsMessage(int seq,
+                                         const std::string& domain,
+                                         const std::string& command,
+                                         DictionaryValue* arguments) {
+
+  DictionaryValue message;
+  message.SetInteger("seq", seq);
+  message.SetString("domain", domain);
+  message.SetString("command", command);
+  message.Set("arguments", arguments);
+
+  std::string json;
+  base::JSONWriter::Write(&message, false, &json);
+  return json;
+}
+
 bool ExtensionDevToolsBridge::RegisterAsDevToolsClientHost() {
   DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
 
   Browser* browser;
   TabStripModel* tab_strip;
   TabContentsWrapper* contents;
   int tab_index;
   if (ExtensionTabUtil::GetTabById(tab_id_, profile_, true,
                                    &browser, &tab_strip,
                                    &contents, &tab_index)) {
     DevToolsManager* devtools_manager = DevToolsManager::GetInstance();
+    if (devtools_manager->GetDevToolsClientHostFor(contents->
+            render_view_host()) != NULL)
+      return false;
+
     devtools_manager->RegisterDevToolsClientHostFor(
         contents->render_view_host(), this);
+
+    // Following messages depend on inspector protocol that is not yet
+    // finalized.
+
+    // 1. Set injected script content.
+    DictionaryValue* arguments = new DictionaryValue();
+    arguments->SetString("scriptSource", "'{}'");
     devtools_manager->ForwardToDevToolsAgent(
         this,
-        DevToolsAgentMsg_SetApuAgentEnabled(true));
+        DevToolsAgentMsg_DispatchOnInspectorBackend(
+            FormatDevToolsMessage(0,
+                                  "Inspector",
+                                  "setInjectedScriptSource",
+                                  arguments)));
+
+    // 2. Report front-end is loaded.
+    devtools_manager->ForwardToDevToolsAgent(
+        this,
+        DevToolsAgentMsg_FrontendLoaded());
+
+    // 3. Do not break on exceptions.
+    arguments = new DictionaryValue();
+    arguments->SetInteger("pauseOnExceptionsState", 0);
+    devtools_manager->ForwardToDevToolsAgent(
+        this,
+        DevToolsAgentMsg_DispatchOnInspectorBackend(
+            FormatDevToolsMessage(1,
+                                  "Debugger",
+                                  "setPauseOnExceptionsState",
+                                  arguments)));
+
+    // 4. Start timeline profiler.
+    devtools_manager->ForwardToDevToolsAgent(
+        this,
+        DevToolsAgentMsg_DispatchOnInspectorBackend(
+            FormatDevToolsMessage(2,
+                                  "Inspector",
+                                  "startTimelineProfiler",
+                                  new DictionaryValue())));
     return true;
   }
   return false;
 }
 
 void ExtensionDevToolsBridge::UnregisterAsDevToolsClientHost() {
   DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
 
   NotifyCloseListener();
 }
 
 // If the tab we are looking at is going away then we fire a closing event at
 // the extension.
 void ExtensionDevToolsBridge::InspectedTabClosing() {
   DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
 
   // TODO(knorton): Remove this event in favor of the standard tabs.onRemoved
   // event in extensions.
   std::string json("[{}]");
   profile_->GetExtensionEventRouter()->DispatchEventToRenderers(
       on_tab_close_event_name_, json, profile_, GURL());
 
   // This may result in this object being destroyed.
   extension_devtools_manager_->BridgeClosingForTab(tab_id_);
 }
 
 void ExtensionDevToolsBridge::SendMessageToClient(const IPC::Message& msg) {
   IPC_BEGIN_MESSAGE_MAP(ExtensionDevToolsBridge, msg)
-    IPC_MESSAGE_HANDLER(DevToolsClientMsg_DispatchToAPU, OnDispatchToAPU);
+    IPC_MESSAGE_HANDLER(DevToolsClientMsg_DispatchOnInspectorFrontend,
+                        OnDispatchOnInspectorFrontend);
     IPC_MESSAGE_UNHANDLED_ERROR()
   IPC_END_MESSAGE_MAP()
 }
 
-void ExtensionDevToolsBridge::OnDispatchToAPU(const std::string& data) {
+void ExtensionDevToolsBridge::OnDispatchOnInspectorFrontend(
+    const std::string& data) {
   DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
 
   std::string json = base::StringPrintf("[%s]", data.c_str());
   profile_->GetExtensionEventRouter()->DispatchEventToRenderers(
       on_page_event_name_, json, profile_, GURL());
 }
-