Add an extension bubble explaining which extensions are in dev mode.

chrome/browser/extensions/extension_prefs.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/extensions/extension_prefs.h"
 
 #include <iterator>
 
 #include "base/command_line.h"
 #include "base/prefs/pref_notifier.h"
@@ skipping 72 matching lines @@
 const char kPrefBlacklist[] = "blacklist";
 
 // The count of how many times we prompted the user to acknowledge an
 // extension.
 const char kPrefAcknowledgePromptCount[] = "ack_prompt_count";
 
 // Indicates whether the user has acknowledged various types of extensions.
 const char kPrefExternalAcknowledged[] = "ack_external";
 const char kPrefBlacklistAcknowledged[] = "ack_blacklist";
 const char kPrefWipeoutAcknowledged[] = "ack_wiped";
+const char kPrefDevModeAcknowledged[] = "ack_devmode";
 
 // Indicates whether the external extension was installed during the first
 // run of this profile.
 const char kPrefExternalInstallFirstRun[] = "external_first_run";
 
 // Indicates whether to show an install warning when the user enables.
 const char kExtensionDidEscalatePermissions[] = "install_warning_on_enable";
 
 // DO NOT USE, use kPrefDisableReasons instead.
 // Indicates whether the extension was updated while it was disabled.
@@ skipping 581 matching lines @@
 
 bool ExtensionPrefs::HasWipeoutBeenAcknowledged(
     const std::string& extension_id) {
   return ReadPrefAsBooleanAndReturn(extension_id, kPrefWipeoutAcknowledged);
 }
 
 void ExtensionPrefs::SetWipeoutAcknowledged(
     const std::string& extension_id,
     bool value) {
   UpdateExtensionPref(extension_id, kPrefWipeoutAcknowledged,
-                      Value::CreateBooleanValue(value));
+                      value ? Value::CreateBooleanValue(value) : NULL);
+}
+
+bool ExtensionPrefs::HasDevModeBeenAcknowledged(
+    const std::string& extension_id) {
+  return ReadPrefAsBooleanAndReturn(extension_id, kPrefDevModeAcknowledged);
+}
+
+void ExtensionPrefs::SetDevModeAcknowledged(
+    const std::string& extension_id,
+    bool value) {
+  UpdateExtensionPref(extension_id, kPrefDevModeAcknowledged,
+                      value ? Value::CreateBooleanValue(value) : NULL);
 }
 
 bool ExtensionPrefs::SetAlertSystemFirstRun() {
   if (prefs_->GetBoolean(prefs::kExtensionAlertsInitializedPref)) {
     return true;
   }
   prefs_->SetBoolean(prefs::kExtensionAlertsInitializedPref, true);
   return false;
 }
 
@@ skipping 1282 matching lines @@
     is_enabled = initial_state == Extension::ENABLED;
   }
 
   extension_pref_value_map_->RegisterExtension(extension_id, install_time,
                                                is_enabled);
   content_settings_store_->RegisterExtension(extension_id, install_time,
                                              is_enabled);
 }
 
 }  // namespace extensions