Open apps section on NTP when new app get installed

BUG=http://code.google.com/p/chromium-os/issues/detail?id=8323
TEST=manual

Review URL: http://codereview.chromium.org/4658006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@65917 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 25 insertions, 21 deletions

diff --git a/chrome/browser/dom_ui/shown_sections_handler.cc b/chrome/browser/dom_ui/shown_sections_handler.cc
index 189c1c3..93a672f 100644
--- a/chrome/browser/dom_ui/shown_sections_handler.cc
+++ b/chrome/browser/dom_ui/shown_sections_handler.cc
@@ -14,7 +14,6 @@
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/notification_details.h"
-#include "chrome/common/notification_source.h"
 #include "chrome/common/notification_type.h"
 #include "chrome/common/pref_names.h"
 
@@ -55,9 +54,6 @@ ShownSectionsHandler::ShownSectionsHandler(PrefService* pref_service)
 }
 
 void ShownSectionsHandler::RegisterMessages() {
-  notification_registrar_.Add(this, NotificationType::EXTENSION_INSTALLED,
-                              Source<Profile>(dom_ui_->GetProfile()));
-
   dom_ui_->RegisterMessageCallback("getShownSections",
       NewCallback(this, &ShownSectionsHandler::HandleGetShownSections));
   dom_ui_->RegisterMessageCallback("setShownSections",
@@ -73,21 +69,6 @@ void ShownSectionsHandler::Observe(NotificationType type,
     int sections = pref_service_->GetInteger(prefs::kNTPShownSections);
     FundamentalValue sections_value(sections);
     dom_ui_->CallJavascriptFunction(L"setShownSections", sections_value);
-  } else if (type == NotificationType::EXTENSION_INSTALLED) {
-    if (Details<const Extension>(details).ptr()->is_app()) {
-      int mode = pref_service_->GetInteger(prefs::kNTPShownSections);
-
-      // De-minimize the apps section.
-      mode &= ~MINIMIZED_APPS;
-
-      // Hide any open sections.
-      mode &= ~ALL_SECTIONS_MASK;
-
-      // Show the apps section.
-      mode |= APPS;
-
-      pref_service_->SetInteger(prefs::kNTPShownSections, mode);
-    }
   } else {
     NOTREACHED();
   }
@@ -137,3 +118,22 @@ void ShownSectionsHandler::MigrateUserPrefs(PrefService* pref_service,
   if (changed)
     pref_service->SetInteger(prefs::kNTPShownSections, shown_sections);
 }
+
+// static
+void ShownSectionsHandler::OnExtensionInstalled(PrefService* prefs,
+                                                const Extension* extension) {
+  if (extension->is_app()) {
+    int mode = prefs->GetInteger(prefs::kNTPShownSections);
+
+    // De-minimize the apps section.
+    mode &= ~MINIMIZED_APPS;
+
+    // Hide any open sections.
+    mode &= ~ALL_SECTIONS_MASK;
+
+    // Show the apps section.
+    mode |= APPS;
+
+    prefs->SetInteger(prefs::kNTPShownSections, mode);
+  }
+}
diff --git a/chrome/browser/dom_ui/shown_sections_handler.h b/chrome/browser/dom_ui/shown_sections_handler.h
index e82c3fb..ad227b4 100644
--- a/chrome/browser/dom_ui/shown_sections_handler.h
+++ b/chrome/browser/dom_ui/shown_sections_handler.h
@@ -8,10 +8,10 @@
 
 #include "chrome/browser/dom_ui/dom_ui.h"
 #include "chrome/common/notification_observer.h"
-#include "chrome/common/notification_registrar.h"
 #include "chrome/browser/prefs/pref_change_registrar.h"
 
 class DOMUI;
+class Extension;
 class Value;
 class PrefService;
 
@@ -63,10 +63,12 @@ class ShownSectionsHandler : public DOMMessageHandler,
                                int old_pref_version,
                                int new_pref_version);
 
+  static void OnExtensionInstalled(PrefService* prefs,
+                                   const Extension* extension);
+
  private:
   PrefService* pref_service_;
   PrefChangeRegistrar pref_registrar_;
-  NotificationRegistrar notification_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ShownSectionsHandler);
 };
diff --git a/chrome/browser/extensions/extensions_service.cc b/chrome/browser/extensions/extensions_service.cc
index f58f5da..17ea2e6 100644
--- a/chrome/browser/extensions/extensions_service.cc
+++ b/chrome/browser/extensions/extensions_service.cc
@@ -22,6 +22,7 @@
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_thread.h"
 #include "chrome/browser/debugger/devtools_manager.h"
+#include "chrome/browser/dom_ui/shown_sections_handler.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/default_apps.h"
 #include "chrome/browser/extensions/extension_accessibility_api.h"
@@ -1689,6 +1690,7 @@ void ExtensionsService::OnExtensionInstalled(const Extension* extension,
 
   UMA_HISTOGRAM_ENUMERATION("Extensions.InstallType",
                             extension->GetHistogramType(), 100);
+  ShownSectionsHandler::OnExtensionInstalled(profile_->GetPrefs(), extension);
   extension_prefs_->OnExtensionInstalled(
       extension, initial_state, initial_enable_incognito);