Revert of Remove deprecated extension notification from content_settings

chrome/browser/content_settings/content_settings_internal_extension_provider.cc

 // Copyright (c) 2013 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/content_settings/content_settings_internal_extension_provider.h"
 
 #include "chrome/browser/content_settings/content_settings_rule.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_content_client.h"
 #include "chrome/common/extensions/api/plugins/plugins_handler.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "extensions/browser/extension_host.h"
-#include "extensions/browser/extension_registry.h"
 #include "extensions/browser/notification_types.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/common/features/simple_feature.h"
 
 using extensions::UnloadedExtensionInfo;
 
 namespace content_settings {
 
 InternalExtensionProvider::InternalExtensionProvider(
     ExtensionService* extension_service)
-    : registrar_(new content::NotificationRegistrar),
-      extension_registry_(
-          extensions::ExtensionRegistry::Get(extension_service->profile())) {
+    : registrar_(new content::NotificationRegistrar) {
   // Whitelist all extensions loaded so far.
   const extensions::ExtensionSet* extensions = extension_service->extensions();
   for (extensions::ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end(); ++it) {
     if (extensions::PluginInfo::HasPlugins(it->get()))
       SetContentSettingForExtension(it->get(), CONTENT_SETTING_ALLOW);
   }
   Profile* profile = extension_service->profile();
   registrar_->Add(this,
                   extensions::NOTIFICATION_EXTENSION_HOST_CREATED,
                   content::Source<Profile>(profile));
-
-  extension_registry_->AddObserver(this);
+  registrar_->Add(this,
+                  extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
+                  content::Source<Profile>(profile));
+  registrar_->Add(this,
+                  extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
+                  content::Source<Profile>(profile));
 }
 
 InternalExtensionProvider::~InternalExtensionProvider() {
   DCHECK(!registrar_.get());
 }
 
 RuleIterator* InternalExtensionProvider::GetRuleIterator(
     ContentSettingsType content_type,
     const ResourceIdentifier& resource_identifier,
     bool incognito) const {
   return value_map_.GetRuleIterator(content_type, resource_identifier, &lock_);
 }
 
 bool InternalExtensionProvider::SetWebsiteSetting(
     const ContentSettingsPattern& primary_pattern,
     const ContentSettingsPattern& secondary_pattern,
     ContentSettingsType content_type,
     const ResourceIdentifier& resource_identifier,
     base::Value* value) {
   return false;
 }
 
 void InternalExtensionProvider::ClearAllContentSettingsRules(
     ContentSettingsType content_type) {}
 
 void InternalExtensionProvider::Observe(int type,
                                   const content::NotificationSource& source,
                                   const content::NotificationDetails& details) {
-  DCHECK_EQ(extensions::NOTIFICATION_EXTENSION_HOST_CREATED, type);
-  const extensions::ExtensionHost* host =
-      content::Details<extensions::ExtensionHost>(details).ptr();
-  if (host->extension()->is_platform_app()) {
-    SetContentSettingForExtension(host->extension(), CONTENT_SETTING_BLOCK);
+  switch (type) {
+    case extensions::NOTIFICATION_EXTENSION_HOST_CREATED: {
+      const extensions::ExtensionHost* host =
+          content::Details<extensions::ExtensionHost>(details).ptr();
+      if (host->extension()->is_platform_app()) {
+        SetContentSettingForExtension(host->extension(), CONTENT_SETTING_BLOCK);
 
-    // White-list CRD's v2 app, until crbug.com/134216 is complete.
-    const char* kAppWhitelist[] = {"2775E568AC98F9578791F1EAB65A1BF5F8CEF414",
-                                   "4AA3C5D69A4AECBD236CAD7884502209F0F5C169",
-                                   "97B23E01B2AA064E8332EE43A7A85C628AADC3F2",
-                                   "9E930B2B5EABA6243AE6C710F126E54688E8FAF6",
-                                   "C449A798C495E6CF7D6AF10162113D564E67AD12",
-                                   "E410CDAB2C6E6DD408D731016CECF2444000A912",
-                                   "EBA908206905323CECE6DC4B276A58A0F4AC573F",
+        // White-list CRD's v2 app, until crbug.com/134216 is complete.
+        const char* kAppWhitelist[] = {
+          "2775E568AC98F9578791F1EAB65A1BF5F8CEF414",
+          "4AA3C5D69A4AECBD236CAD7884502209F0F5C169",
+          "97B23E01B2AA064E8332EE43A7A85C628AADC3F2",
+          "9E930B2B5EABA6243AE6C710F126E54688E8FAF6",
+          "C449A798C495E6CF7D6AF10162113D564E67AD12",
+          "E410CDAB2C6E6DD408D731016CECF2444000A912",
+          "EBA908206905323CECE6DC4B276A58A0F4AC573F",
 
-                                   // http://crbug.com/327507
-                                   "FAFE8EFDD2D6AE2EEB277AFEB91C870C79064D9E",
-                                   "3B52D273A271D4E2348233E322426DBAE854B567",
-                                   "5DF6ADC8708DF59FCFDDBF16AFBFB451380C2059",
-                                   "1037DEF5F6B06EA46153AD87B6C5C37440E3F2D1",
-                                   "F5815DAFEB8C53B078DD1853B2059E087C42F139",
-                                   "6A08EFFF9C16E090D6DCC7EC55A01CADAE840513",
+          // http://crbug.com/327507
+          "FAFE8EFDD2D6AE2EEB277AFEB91C870C79064D9E",
+          "3B52D273A271D4E2348233E322426DBAE854B567",
+          "5DF6ADC8708DF59FCFDDBF16AFBFB451380C2059",
+          "1037DEF5F6B06EA46153AD87B6C5C37440E3F2D1",
+          "F5815DAFEB8C53B078DD1853B2059E087C42F139",
+          "6A08EFFF9C16E090D6DCC7EC55A01CADAE840513",
 
-                                   // http://crbug.com/354258
-                                   "C32D6D93E12F5401DAA3A723E0C3CC5F25429BA4",
-                                   "9099782647D39C778E15C8C6E0D23C88F5CDE170",
-                                   "B7D5B52D1E5B106288BD7F278CAFA5E8D76108B0",
-                                   "89349DBAA2C4022FB244AA50182AB60934EB41EE",
-                                   "CB593E510640572A995CB1B6D41BD85ED51E63F8",
-                                   "1AD1AC86C87969CD3434FA08D99DBA6840AEA612",
-                                   "9C2EA21D7975BDF2B3C01C3A454EE44854067A6D",
-                                   "D2C488C80C3C90C3E01A991112A05E37831E17D0",
-                                   "6EEC061C0E74B46C7B5BE2EEFA49436368F4988F",
-                                   "8B344D9E8A4C505EF82A0DBBC25B8BD1F984E777",
-                                   "E06AFCB1EB0EFD237824CC4AC8FDD3D43E8BC868",
+          // http://crbug.com/354258
+          "C32D6D93E12F5401DAA3A723E0C3CC5F25429BA4",
+          "9099782647D39C778E15C8C6E0D23C88F5CDE170",
+          "B7D5B52D1E5B106288BD7F278CAFA5E8D76108B0",
+          "89349DBAA2C4022FB244AA50182AB60934EB41EE",
+          "CB593E510640572A995CB1B6D41BD85ED51E63F8",
+          "1AD1AC86C87969CD3434FA08D99DBA6840AEA612",
+          "9C2EA21D7975BDF2B3C01C3A454EE44854067A6D",
+          "D2C488C80C3C90C3E01A991112A05E37831E17D0",
+          "6EEC061C0E74B46C7B5BE2EEFA49436368F4988F",
+          "8B344D9E8A4C505EF82A0DBBC25B8BD1F984E777",
+          "E06AFCB1EB0EFD237824CC4AC8FDD3D43E8BC868",
 
-                                   // http://crbug.com/386324
-                                   "F76F43EFFF56BF17A9868A5243F339BA28746632",
-                                   "C6EA52B92F80878515F94137020F01519357E5B5",
-                                   "E466389F058ABD73FF6FDD06F768A351FCBF8532",
-                                   "40063F1CF7B68BA847A26FA6620DDF156171D23C",
-                                   "A6FD8E15353CF1F5C3D0A7B20E1D10AEA4DD3E6A",
-                                   "57AC4D9E6BD8A2D0A70056B5FAC2378CAA588912",
-                                   "02037314DA4D913640DCF0E296A7D01F4FD793EC",
-                                   "B6EC0809BC63E10B431C5E4AA3645232CA86B2A5",
-                                   "48CA541313139786F056DBCB504A1025CFF5D2E3",
-                                   "05106136AE7F08A3C181D4648E5438350B1D2B4F"};
-    if (extensions::SimpleFeature::IsIdInList(
-            host->extension()->id(),
-            std::set<std::string>(kAppWhitelist,
-                                  kAppWhitelist + arraysize(kAppWhitelist)))) {
-      SetContentSettingForExtensionAndResource(
-          host->extension(),
-          ChromeContentClient::kRemotingViewerPluginPath,
-          CONTENT_SETTING_ALLOW);
+          // http://crbug.com/386324
+          "F76F43EFFF56BF17A9868A5243F339BA28746632",
+          "C6EA52B92F80878515F94137020F01519357E5B5",
+          "E466389F058ABD73FF6FDD06F768A351FCBF8532",
+          "40063F1CF7B68BA847A26FA6620DDF156171D23C",
+          "A6FD8E15353CF1F5C3D0A7B20E1D10AEA4DD3E6A",
+          "57AC4D9E6BD8A2D0A70056B5FAC2378CAA588912",
+          "02037314DA4D913640DCF0E296A7D01F4FD793EC",
+          "B6EC0809BC63E10B431C5E4AA3645232CA86B2A5",
+          "48CA541313139786F056DBCB504A1025CFF5D2E3",
+          "05106136AE7F08A3C181D4648E5438350B1D2B4F"
+        };
+        if (extensions::SimpleFeature::IsIdInList(
+                host->extension()->id(),
+                std::set<std::string>(
+                    kAppWhitelist, kAppWhitelist + arraysize(kAppWhitelist)))) {
+          SetContentSettingForExtensionAndResource(
+              host->extension(),
+              ChromeContentClient::kRemotingViewerPluginPath,
+              CONTENT_SETTING_ALLOW);
+        }
+      }
+
+      break;
     }
+    case extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED: {
+      const extensions::Extension* extension =
+          content::Details<extensions::Extension>(details).ptr();
+      if (extensions::PluginInfo::HasPlugins(extension))
+        SetContentSettingForExtension(extension, CONTENT_SETTING_ALLOW);
+      break;
+    }
+    case extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
+      const UnloadedExtensionInfo& info =
+          *(content::Details<UnloadedExtensionInfo>(details).ptr());
+      if (extensions::PluginInfo::HasPlugins(info.extension))
+        SetContentSettingForExtension(info.extension, CONTENT_SETTING_DEFAULT);
+      break;
+    }
+    default:
+      NOTREACHED();
   }
 }
 
-void InternalExtensionProvider::OnExtensionLoaded(
-    content::BrowserContext* browser_context,
-    const extensions::Extension* extension) {
-  if (extensions::PluginInfo::HasPlugins(extension))
-    SetContentSettingForExtension(extension, CONTENT_SETTING_ALLOW);
-}
-
-void InternalExtensionProvider::OnExtensionUnloaded(
-    content::BrowserContext* browser_context,
-    const extensions::Extension* extension,
-    extensions::UnloadedExtensionInfo::Reason reason) {
-  if (extensions::PluginInfo::HasPlugins(extension))
-    SetContentSettingForExtension(extension, CONTENT_SETTING_DEFAULT);
-}
-
 void InternalExtensionProvider::ShutdownOnUIThread() {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   RemoveAllObservers();
   registrar_.reset();
-  extension_registry_->RemoveObserver(this);
 }
 
 void InternalExtensionProvider::SetContentSettingForExtension(
     const extensions::Extension* extension,
     ContentSetting setting) {
   SetContentSettingForExtensionAndResource(
       extension, ResourceIdentifier(), setting);
 }
 
 void InternalExtensionProvider::SetContentSettingForExtensionAndResource(
@@ skipping 23 matching lines @@
                           new base::FundamentalValue(setting));
     }
   }
   NotifyObservers(primary_pattern,
                   secondary_pattern,
                   CONTENT_SETTINGS_TYPE_PLUGINS,
                   resource);
 }
 
 }  // namespace content_settings