Add trace links to chrome://inspect (if chrome://inspect?tracing is used)

chrome/browser/ui/webui/inspect_ui.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 "chrome/browser/ui/webui/inspect_ui.h"
 
 #include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "chrome/browser/devtools/devtools_target_impl.h"
 #include "chrome/browser/devtools/devtools_targets_ui.h"
@@ skipping 22 matching lines @@
 
 namespace {
 
 const char kInitUICommand[]  = "init-ui";
 const char kInspectCommand[]  = "inspect";
 const char kActivateCommand[]  = "activate";
 const char kCloseCommand[]  = "close";
 const char kReloadCommand[]  = "reload";
 const char kOpenCommand[]  = "open";
 const char kInspectBrowser[] = "inspect-browser";
+const char kTraceBrowser[] = "trace-browser";
 const char kLocalHost[] = "localhost";
 
 const char kDiscoverUsbDevicesEnabledCommand[] =
     "set-discover-usb-devices-enabled";
 const char kPortForwardingEnabledCommand[] =
     "set-port-forwarding-enabled";
 const char kPortForwardingConfigCommand[] = "set-port-forwarding-config";
 
 const char kPortForwardingDefaultPort[] = "8080";
 const char kPortForwardingDefaultLocation[] = "localhost:8080";
 
 class InspectMessageHandler : public WebUIMessageHandler {
  public:
   explicit InspectMessageHandler(InspectUI* inspect_ui)
       : inspect_ui_(inspect_ui) {}
   virtual ~InspectMessageHandler() {}
 
  private:
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   void HandleInitUICommand(const base::ListValue* args);
   void HandleInspectCommand(const base::ListValue* args);
   void HandleActivateCommand(const base::ListValue* args);
   void HandleCloseCommand(const base::ListValue* args);
   void HandleReloadCommand(const base::ListValue* args);
   void HandleOpenCommand(const base::ListValue* args);
   void HandleInspectBrowserCommand(const base::ListValue* args);
+  void HandleTraceBrowserCommand(const base::ListValue* args);
   void HandleBooleanPrefChanged(const char* pref_name,
                                 const base::ListValue* args);
   void HandlePortForwardingConfigCommand(const base::ListValue* args);
 
   InspectUI* inspect_ui_;
 
   DISALLOW_COPY_AND_ASSIGN(InspectMessageHandler);
 };
 
 void InspectMessageHandler::RegisterMessages() {
@@ skipping 22 matching lines @@
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback(kReloadCommand,
       base::Bind(&InspectMessageHandler::HandleReloadCommand,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback(kOpenCommand,
       base::Bind(&InspectMessageHandler::HandleOpenCommand,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback(kInspectBrowser,
       base::Bind(&InspectMessageHandler::HandleInspectBrowserCommand,
                  base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(kTraceBrowser,
+      base::Bind(&InspectMessageHandler::HandleTraceBrowserCommand,
+                 base::Unretained(this)));
 }
 
 void InspectMessageHandler::HandleInitUICommand(const base::ListValue*) {
   inspect_ui_->InitUI();
 }
 
 static bool ParseStringArgs(const base::ListValue* args,
                             std::string* arg0,
                             std::string* arg1,
                             std::string* arg2 = 0) {
@@ skipping 43 matching lines @@
     const base::ListValue* args) {
   std::string source_id;
   std::string browser_id;
   std::string front_end;
   if (ParseStringArgs(args, &source_id, &browser_id, &front_end)) {
     inspect_ui_->InspectBrowserWithCustomFrontend(
         source_id, browser_id, GURL(front_end));
   }
 }
 
+void InspectMessageHandler::HandleTraceBrowserCommand(
+    const base::ListValue* args) {
+  std::string source_id;
+  std::string browser_id;
+  if (ParseStringArgs(args, &source_id, &browser_id)) {
+    inspect_ui_->InspectBrowserWithCustomFrontend(
+        source_id, browser_id, GURL(std::string(content::kChromeUIScheme)
+          + "://" + content::kChromeUITracingHost));
+  }
+}
+
 void InspectMessageHandler::HandleBooleanPrefChanged(
     const char* pref_name,
     const base::ListValue* args) {
   Profile* profile = Profile::FromWebUI(web_ui());
   if (!profile)
     return;
 
   bool enabled;
   if (args->GetSize() == 1 && args->GetBoolean(0, &enabled))
     profile->GetPrefs()->SetBoolean(pref_name, enabled);
@@ skipping 290 matching lines @@
   scoped_ptr<base::Value> source_value(base::Value::CreateStringValue(source));
   web_ui()->CallJavascriptFunction(
       "populateTargets",
       *source_value.get(),
       *targets.get());
 }
 
 void InspectUI::PopulatePortStatus(const base::Value& status) {
   web_ui()->CallJavascriptFunction("populatePortStatus", status);
 }