Sync the launch type pref for apps.

This CL syncs the launch type pref for apps by adding a property to
app_specifics.proto. The sync data is processed in ExtensionSyncService.

extensions::SetLaunchType has been changed to take an ExtensionService
so that it is able to sync the pref change when a launch type is updated.

A value has been added to the LaunchType enum to represent an invalid
launch type preference.

BUG=181576
TBR=sky@chromium.org

Review URL: https://codereview.chromium.org/93883004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244112 0039d316-1c4b-4281-b951-d872f2087c98

14 files changed, 160 insertions, 30 deletions

diff --git a/chrome/browser/automation/testing_automation_provider.cc b/chrome/browser/automation/testing_automation_provider.cc
index 42a4b1e..b0293f4 100644
--- a/chrome/browser/automation/testing_automation_provider.cc
+++ b/chrome/browser/automation/testing_automation_provider.cc
@@ -4346,8 +4346,7 @@ void TestingAutomationProvider::SetAppLaunchType(
     return;
   }
 
-  extensions::SetLaunchType(
-      service->extension_prefs(), extension->id(), launch_type);
+  extensions::SetLaunchType(service, extension->id(), launch_type);
   reply.SendSuccess(NULL);
 }
 
diff --git a/chrome/browser/extensions/api/management/management_apitest.cc b/chrome/browser/extensions/api/management/management_apitest.cc
index 7d28505..3710b3a 100644
--- a/chrome/browser/extensions/api/management/management_apitest.cc
+++ b/chrome/browser/extensions/api/management/management_apitest.cc
@@ -220,8 +220,7 @@ IN_PROC_BROWSER_TEST_F(ExtensionManagementApiTest, DISABLED_LaunchPanelApp) {
 
   // Set a pref indicating that the user wants to launch in a regular tab.
   // This should be ignored, because panel apps always load in a popup.
-  extensions::SetLaunchType(service->extension_prefs(),
-      app_id, extensions::LAUNCH_TYPE_REGULAR);
+  extensions::SetLaunchType(service, app_id, extensions::LAUNCH_TYPE_REGULAR);
 
   // Load the extension again.
   std::string app_id_new;
@@ -280,8 +279,7 @@ IN_PROC_BROWSER_TEST_F(ExtensionManagementApiTest, MAYBE_LaunchTabApp) {
   ASSERT_FALSE(service->GetExtensionById(app_id, true));
 
   // Set a pref indicating that the user wants to launch in a window.
-  extensions::SetLaunchType(service->extension_prefs(),
-      app_id, extensions::LAUNCH_TYPE_WINDOW);
+  extensions::SetLaunchType(service, app_id, extensions::LAUNCH_TYPE_WINDOW);
 
   std::string app_id_new;
   LoadAndWaitForLaunch("management/launch_app_tab", &app_id_new);
diff --git a/chrome/browser/extensions/app_sync_data.cc b/chrome/browser/extensions/app_sync_data.cc
index f3a817d..ac0fb07 100644
--- a/chrome/browser/extensions/app_sync_data.cc
+++ b/chrome/browser/extensions/app_sync_data.cc
@@ -27,10 +27,12 @@ AppSyncData::AppSyncData(const Extension& extension,
                          bool enabled,
                          bool incognito_enabled,
                          const syncer::StringOrdinal& app_launch_ordinal,
-                         const syncer::StringOrdinal& page_ordinal)
+                         const syncer::StringOrdinal& page_ordinal,
+                         extensions::LaunchType launch_type)
     : extension_sync_data_(extension, enabled, incognito_enabled),
       app_launch_ordinal_(app_launch_ordinal),
-      page_ordinal_(page_ordinal) {
+      page_ordinal_(page_ordinal),
+      launch_type_(launch_type) {
 }
 
 AppSyncData::~AppSyncData() {}
@@ -51,12 +53,22 @@ syncer::SyncChange AppSyncData::GetSyncChange(
 
 void AppSyncData::PopulateAppSpecifics(sync_pb::AppSpecifics* specifics) const {
   DCHECK(specifics);
-  // Only sync the ordinal values if they are valid.
+  // Only sync the ordinal values and launch type if they are valid.
   if (app_launch_ordinal_.IsValid())
     specifics->set_app_launch_ordinal(app_launch_ordinal_.ToInternalValue());
   if (page_ordinal_.IsValid())
     specifics->set_page_ordinal(page_ordinal_.ToInternalValue());
 
+  sync_pb::AppSpecifics::LaunchType sync_launch_type =
+      static_cast<sync_pb::AppSpecifics::LaunchType>(launch_type_);
+
+  // The corresponding validation of this value during processing of an
+  // AppSyncData is in ExtensionSyncService::ProcessAppSyncData.
+  if (launch_type_ >= LAUNCH_TYPE_FIRST && launch_type_ < NUM_LAUNCH_TYPES &&
+      sync_pb::AppSpecifics_LaunchType_IsValid(sync_launch_type)) {
+    specifics->set_launch_type(sync_launch_type);
+  }
+
   extension_sync_data_.PopulateExtensionSpecifics(
       specifics->mutable_extension());
 }
@@ -67,6 +79,10 @@ void AppSyncData::PopulateFromAppSpecifics(
 
   app_launch_ordinal_ = syncer::StringOrdinal(specifics.app_launch_ordinal());
   page_ordinal_ = syncer::StringOrdinal(specifics.page_ordinal());
+
+  launch_type_ = specifics.has_launch_type()
+      ? static_cast<extensions::LaunchType>(specifics.launch_type())
+      : LAUNCH_TYPE_INVALID;
 }
 
 void AppSyncData::PopulateFromSyncData(const syncer::SyncData& sync_data) {
diff --git a/chrome/browser/extensions/app_sync_data.h b/chrome/browser/extensions/app_sync_data.h
index 0d2c67f..2e34460 100644
--- a/chrome/browser/extensions/app_sync_data.h
+++ b/chrome/browser/extensions/app_sync_data.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_EXTENSIONS_APP_SYNC_DATA_H_
 
 #include "chrome/browser/extensions/extension_sync_data.h"
+#include "chrome/common/extensions/extension_constants.h"
 #include "sync/api/string_ordinal.h"
 #include "sync/api/sync_change.h"
 
@@ -32,7 +33,8 @@ class AppSyncData {
               bool enabled,
               bool incognito_enabled,
               const syncer::StringOrdinal& app_launch_ordinal,
-              const syncer::StringOrdinal& page_ordinal);
+              const syncer::StringOrdinal& page_ordinal,
+              extensions::LaunchType launch_type);
   ~AppSyncData();
 
   // Retrive sync data from this class.
@@ -55,6 +57,10 @@ class AppSyncData {
     return extension_sync_data_;
   }
 
+  extensions::LaunchType launch_type() const {
+    return launch_type_;
+  }
+
  private:
   // Convert an AppSyncData back out to a sync structure.
   void PopulateAppSpecifics(sync_pb::AppSpecifics* specifics) const;
@@ -67,6 +73,7 @@ class AppSyncData {
   ExtensionSyncData extension_sync_data_;
   syncer::StringOrdinal app_launch_ordinal_;
   syncer::StringOrdinal page_ordinal_;
+  extensions::LaunchType launch_type_;
 };
 
 }  // namespace extensions
diff --git a/chrome/browser/extensions/extension_sync_service.cc b/chrome/browser/extensions/extension_sync_service.cc
index 9b875a1..1fb29b5 100644
--- a/chrome/browser/extensions/extension_sync_service.cc
+++ b/chrome/browser/extensions/extension_sync_service.cc
@@ -16,6 +16,7 @@
 #include "chrome/browser/extensions/extension_sync_data.h"
 #include "chrome/browser/extensions/extension_sync_service_factory.h"
 #include "chrome/browser/extensions/extension_util.h"
+#include "chrome/browser/extensions/launch_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync/glue/sync_start_util.h"
 #include "chrome/browser/sync/sync_prefs.h"
@@ -241,7 +242,9 @@ extensions::AppSyncData ExtensionSyncService::GetAppSyncData(
       extension_service_->IsExtensionEnabled(extension.id()),
       extension_util::IsIncognitoEnabled(extension.id(), extension_service_),
       extension_prefs_->app_sorting()->GetAppLaunchOrdinal(extension.id()),
-      extension_prefs_->app_sorting()->GetPageOrdinal(extension.id()));
+      extension_prefs_->app_sorting()->GetPageOrdinal(extension.id()),
+      extensions::GetLaunchTypePrefValue(extension_prefs_, extension.id()));
+
 }
 
 std::vector<extensions::ExtensionSyncData>
@@ -311,6 +314,14 @@ bool ExtensionSyncService::ProcessAppSyncData(
         app_sync_data.page_ordinal());
   }
 
+  // The corresponding validation of this value during AppSyncData population
+  // is in AppSyncData::PopulateAppSpecifics.
+  if (app_sync_data.launch_type() >= extensions::LAUNCH_TYPE_FIRST &&
+      app_sync_data.launch_type() < extensions::NUM_LAUNCH_TYPES) {
+    extensions::SetLaunchType(extension_service_, id,
+                              app_sync_data.launch_type());
+  }
+
   if (!ProcessExtensionSyncDataHelper(app_sync_data.extension_sync_data(),
                                       syncer::APPS)) {
     app_sync_bundle_.AddPendingApp(id, app_sync_data);
diff --git a/chrome/browser/extensions/launch_util.cc b/chrome/browser/extensions/launch_util.cc
index 14423ae..e1f4d6f 100644
--- a/chrome/browser/extensions/launch_util.cc
+++ b/chrome/browser/extensions/launch_util.cc
@@ -7,6 +7,7 @@
 #include "base/command_line.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_prefs.h"
+#include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_constants.h"
@@ -32,7 +33,6 @@ const char kPrefLaunchType[] = "launchType";
 
 LaunchType GetLaunchType(const ExtensionPrefs* prefs,
                          const Extension* extension) {
-  int value = -1;
   LaunchType result = LAUNCH_TYPE_DEFAULT;
 
   // Launch hosted apps as windows by default for streamlined hosted apps.
@@ -42,13 +42,10 @@ LaunchType GetLaunchType(const ExtensionPrefs* prefs,
     result = LAUNCH_TYPE_WINDOW;
   }
 
-  if (prefs->ReadPrefAsInteger(extension->id(), kPrefLaunchType, &value) &&
-      (value == LAUNCH_TYPE_PINNED ||
-       value == LAUNCH_TYPE_REGULAR ||
-       value == LAUNCH_TYPE_FULLSCREEN ||
-       value == LAUNCH_TYPE_WINDOW)) {
+  int value = GetLaunchTypePrefValue(prefs, extension->id());
+  if (value >= LAUNCH_TYPE_FIRST && value < NUM_LAUNCH_TYPES)
     result = static_cast<LaunchType>(value);
-  }
+
 #if defined(OS_MACOSX)
     // App windows are not yet supported on mac.  Pref sync could make
     // the launch type LAUNCH_TYPE_WINDOW, even if there is no UI to set it
@@ -66,11 +63,27 @@ LaunchType GetLaunchType(const ExtensionPrefs* prefs,
   return result;
 }
 
-void SetLaunchType(ExtensionPrefs* prefs,
+LaunchType GetLaunchTypePrefValue(const ExtensionPrefs* prefs,
+                                  const std::string& extension_id) {
+  int value = LAUNCH_TYPE_INVALID;
+  return prefs->ReadPrefAsInteger(extension_id, kPrefLaunchType, &value)
+      ? static_cast<LaunchType>(value) : LAUNCH_TYPE_INVALID;
+}
+
+void SetLaunchType(ExtensionService* service,
                    const std::string& extension_id,
                    LaunchType launch_type) {
-  prefs->UpdateExtensionPref(extension_id, kPrefLaunchType,
+  DCHECK(launch_type >= LAUNCH_TYPE_FIRST && launch_type < NUM_LAUNCH_TYPES);
+
+  service->extension_prefs()->UpdateExtensionPref(extension_id, kPrefLaunchType,
       new base::FundamentalValue(static_cast<int>(launch_type)));
+
+  // Sync the launch type.
+  const Extension* extension = service->GetInstalledExtension(extension_id);
+  if (extension) {
+    ExtensionSyncService::Get(service->profile())->
+        SyncExtensionChangeIfNeeded(*extension);
+  }
 }
 
 LaunchContainer GetLaunchContainer(const ExtensionPrefs* prefs,
diff --git a/chrome/browser/extensions/launch_util.h b/chrome/browser/extensions/launch_util.h
index 0cdfb72..cd5f693 100644
--- a/chrome/browser/extensions/launch_util.h
+++ b/chrome/browser/extensions/launch_util.h
@@ -9,6 +9,8 @@
 
 #include "chrome/common/extensions/extension_constants.h"
 
+class ExtensionService;
+
 namespace extensions {
 
 class Extension;
@@ -21,8 +23,13 @@ class ExtensionPrefs;
 LaunchType GetLaunchType(const ExtensionPrefs* prefs,
                          const Extension* extension);
 
-// Sets an extension's launch type preference.
-void SetLaunchType(ExtensionPrefs* prefs,
+// Returns the LaunchType that is set in the prefs. Returns LAUNCH_TYPE_INVALID
+// if no value is set in prefs.
+LaunchType GetLaunchTypePrefValue(const ExtensionPrefs* prefs,
+                                  const std::string& extension_id);
+
+// Sets an extension's launch type preference and syncs the value if necessary.
+void SetLaunchType(ExtensionService* prefs,
                    const std::string& extension_id,
                    LaunchType launch_type);
 
diff --git a/chrome/browser/sync/test/integration/sync_app_helper.cc b/chrome/browser/sync/test/integration/sync_app_helper.cc
index 5e1f845..cde49ed 100644
--- a/chrome/browser/sync/test/integration/sync_app_helper.cc
+++ b/chrome/browser/sync/test/integration/sync_app_helper.cc
@@ -6,10 +6,12 @@
 
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/extensions/launch_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync/test/integration/extensions_helper.h"
 #include "chrome/browser/sync/test/integration/sync_datatype_helper.h"
 #include "chrome/browser/sync/test/integration/sync_extension_helper.h"
+#include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/sync_helper.h"
 #include "extensions/browser/app_sorting.h"
 #include "extensions/common/extension.h"
@@ -26,11 +28,12 @@ struct AppState {
 
   syncer::StringOrdinal app_launch_ordinal;
   syncer::StringOrdinal page_ordinal;
+  extensions::LaunchType launch_type;
 };
 
 typedef std::map<std::string, AppState> AppStateMap;
 
-AppState::AppState() {}
+AppState::AppState() : launch_type(extensions::LAUNCH_TYPE_INVALID) {}
 
 AppState::~AppState() {}
 
@@ -40,7 +43,8 @@ bool AppState::IsValid() const {
 
 bool AppState::Equals(const AppState& other) const {
   return app_launch_ordinal.Equals(other.app_launch_ordinal) &&
-      page_ordinal.Equals(other.page_ordinal);
+      page_ordinal.Equals(other.page_ordinal) &&
+      launch_type == other.launch_type;
 }
 
 // Load all the app specific values for |id| into |app_state|.
@@ -51,6 +55,9 @@ void LoadApp(ExtensionService* extension_service,
       app_sorting()->GetAppLaunchOrdinal(id);
   app_state->page_ordinal = extension_service->extension_prefs()->
       app_sorting()->GetPageOrdinal(id);
+  app_state->launch_type =
+      extensions::GetLaunchTypePrefValue(extension_service->extension_prefs(),
+                                         id);
 }
 
 // Returns a map from |profile|'s installed extensions to their state.
diff --git a/chrome/browser/sync/test/integration/two_client_apps_sync_test.cc b/chrome/browser/sync/test/integration/two_client_apps_sync_test.cc
index 9d953db..8b9e9a9 100644
--- a/chrome/browser/sync/test/integration/two_client_apps_sync_test.cc
+++ b/chrome/browser/sync/test/integration/two_client_apps_sync_test.cc
@@ -4,6 +4,7 @@
 
 #include "base/basictypes.h"
 #include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/launch_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync/test/integration/apps_helper.h"
 #include "chrome/browser/sync/test/integration/profile_sync_service_harness.h"
@@ -422,6 +423,75 @@ IN_PROC_BROWSER_TEST_F(TwoClientAppsSyncTest, UpdateCWSOrdinals) {
   ASSERT_TRUE(AllProfilesHaveSameAppsAsVerifier());
 }
 
+// Adjust the launch type on the first client and sync. Both clients should
+// have the same launch type values for the CWS.
+IN_PROC_BROWSER_TEST_F(TwoClientAppsSyncTest, UpdateLaunchType) {
+  ASSERT_TRUE(SetupSync());
+  ASSERT_TRUE(AllProfilesHaveSameAppsAsVerifier());
+
+  // Change the launch type to window.
+  extensions::SetLaunchType(GetProfile(1)->GetExtensionService(),
+                            extension_misc::kWebStoreAppId,
+                            extensions::LAUNCH_TYPE_WINDOW);
+  extensions::SetLaunchType(verifier()->GetExtensionService(),
+                            extension_misc::kWebStoreAppId,
+                            extensions::LAUNCH_TYPE_WINDOW);
+  ASSERT_TRUE(AwaitQuiescence());
+  ASSERT_TRUE(AllProfilesHaveSameAppsAsVerifier());
+
+  // Change the launch type to regular tab.
+  extensions::SetLaunchType(GetProfile(1)->GetExtensionService(),
+                            extension_misc::kWebStoreAppId,
+                            extensions::LAUNCH_TYPE_REGULAR);
+  ASSERT_FALSE(HasSameAppsAsVerifier(1));
+  extensions::SetLaunchType(verifier()->GetExtensionService(),
+                            extension_misc::kWebStoreAppId,
+                            extensions::LAUNCH_TYPE_REGULAR);
+  ASSERT_TRUE(AwaitQuiescence());
+  ASSERT_TRUE(AllProfilesHaveSameAppsAsVerifier());
+}
+
+IN_PROC_BROWSER_TEST_F(TwoClientAppsSyncTest, UnexpectedLaunchType) {
+  ASSERT_TRUE(SetupSync());
+  ASSERT_TRUE(AllProfilesHaveSameAppsAsVerifier());
+
+  extensions::SetLaunchType(GetProfile(1)->GetExtensionService(),
+                            extension_misc::kWebStoreAppId,
+                            extensions::LAUNCH_TYPE_REGULAR);
+  extensions::SetLaunchType(verifier()->GetExtensionService(),
+                            extension_misc::kWebStoreAppId,
+                            extensions::LAUNCH_TYPE_REGULAR);
+  ASSERT_TRUE(AwaitQuiescence());
+  ASSERT_TRUE(AllProfilesHaveSameAppsAsVerifier());
+
+  const extensions::Extension* extension =
+      GetProfile(1)->GetExtensionService()->
+          GetInstalledExtension(extension_misc::kWebStoreAppId);
+  ASSERT_TRUE(extension);
+
+  ExtensionSyncService* extension_sync_service =
+      ExtensionSyncService::Get(GetProfile(1));
+
+  extensions::AppSyncData original_data(
+      extension_sync_service->GetAppSyncData(*extension));
+
+  // Create an invalid launch type and ensure it doesn't get down-synced. This
+  // simulates the case of a future launch type being added which old versions
+  // don't yet understand.
+  extensions::AppSyncData invalid_launch_type_data(
+      *extension,
+      original_data.extension_sync_data().enabled(),
+      original_data.extension_sync_data().incognito_enabled(),
+      original_data.app_launch_ordinal(),
+      original_data.page_ordinal(),
+      extensions::NUM_LAUNCH_TYPES);
+  extension_sync_service->ProcessAppSyncData(invalid_launch_type_data);
+
+  // The launch type should remain the same.
+  ASSERT_TRUE(AwaitQuiescence());
+  ASSERT_TRUE(AllProfilesHaveSameAppsAsVerifier());
+}
+
 // TODO(akalin): Add tests exercising:
 //   - Offline installation/uninstallation behavior
 //   - App-specific properties
diff --git a/chrome/browser/ui/app_list/app_list_controller_delegate.cc b/chrome/browser/ui/app_list/app_list_controller_delegate.cc
index 66cc94a..af06152 100644
--- a/chrome/browser/ui/app_list/app_list_controller_delegate.cc
+++ b/chrome/browser/ui/app_list/app_list_controller_delegate.cc
@@ -148,7 +148,7 @@ void AppListControllerDelegate::SetExtensionLaunchType(
   ExtensionService* service =
       extensions::ExtensionSystem::Get(profile)->extension_service();
   extensions::SetLaunchType(
-      service->extension_prefs(), extension_id, launch_type);
+      service, extension_id, launch_type);
 }
 
 bool AppListControllerDelegate::IsExtensionInstalled(
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc b/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
index f2954bc4..1acf755 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
@@ -819,7 +819,7 @@ void ChromeLauncherController::SetLaunchType(
   if (!HasItemController(id))
     return;
 
-  extensions::SetLaunchType(profile_->GetExtensionService()->extension_prefs(),
+  extensions::SetLaunchType(profile_->GetExtensionService(),
                             id_to_item_controller_map_[id]->app_id(),
                             launch_type);
 }
diff --git a/chrome/browser/ui/ash/launcher/launcher_context_menu.cc b/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
index c85c0ad..36d7d6e 100644
--- a/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
@@ -204,6 +204,9 @@ base::string16 LauncherContextMenu::GetLabelForCommandId(int command_id) const {
       case extensions::LAUNCH_TYPE_FULLSCREEN:
       case extensions::LAUNCH_TYPE_WINDOW:
         return l10n_util::GetStringUTF16(IDS_LAUNCHER_CONTEXT_MENU_NEW_WINDOW);
+      default:
+        NOTREACHED();
+        return base::string16();
     }
   }
   NOTREACHED();
diff --git a/chrome/browser/ui/startup/startup_browser_creator_browsertest.cc b/chrome/browser/ui/startup/startup_browser_creator_browsertest.cc
index 88f2acd..13887c5 100644
--- a/chrome/browser/ui/startup/startup_browser_creator_browsertest.cc
+++ b/chrome/browser/ui/startup/startup_browser_creator_browsertest.cc
@@ -122,7 +122,7 @@ class StartupBrowserCreatorTest : public ExtensionBrowserTest {
                         extensions::LaunchType launch_type) {
     ExtensionService* service = extensions::ExtensionSystem::Get(
         browser()->profile())->extension_service();
-    extensions::SetLaunchType(service->extension_prefs(), app_id, launch_type);
+    extensions::SetLaunchType(service, app_id, launch_type);
   }
 
   Browser* FindOneOtherBrowserForProfile(Profile* profile,
diff --git a/chrome/browser/ui/webui/ntp/app_launcher_handler.cc b/chrome/browser/ui/webui/ntp/app_launcher_handler.cc
index 3330da6..cada323 100644
--- a/chrome/browser/ui/webui/ntp/app_launcher_handler.cc
+++ b/chrome/browser/ui/webui/ntp/app_launcher_handler.cc
@@ -568,10 +568,9 @@ void AppLauncherHandler::HandleSetLaunchType(const base::ListValue* args) {
   base::AutoReset<bool> auto_reset(&ignore_changes_, true);
 
   extensions::SetLaunchType(
-      extension_service_->extension_prefs(),
+      extension_service_,
       extension_id,
-      static_cast<extensions::LaunchType>(
-          static_cast<int>(launch_type)));
+      static_cast<extensions::LaunchType>(static_cast<int>(launch_type)));
 }
 
 void AppLauncherHandler::HandleUninstallApp(const base::ListValue* args) {