Fix a crash in PageActionImageView when extensions are reloaded due to incognito settings changing.

chrome/browser/extensions/extension_service_unittest.cc

 // Copyright (c) 2011 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_service_unittest.h"
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
@@ skipping 436 matching lines @@
   file_util::Delete(extensions_install_dir_, true);
   file_util::CopyDirectory(source_install_dir, extensions_install_dir_, true);
 
   InitializeExtensionService(temp_prefs, extensions_install_dir_, false);
 }
 
 void ExtensionServiceTestBase::InitializeEmptyExtensionService() {
   InitializeExtensionServiceHelper(false);
 }
 
+void ExtensionServiceTestBase::InitializeExtensionProcessManager() {
+  profile_->CreateExtensionProcessManager();
+}
+
 void ExtensionServiceTestBase::InitializeExtensionServiceWithUpdater() {
   InitializeExtensionServiceHelper(true);
   service_->updater()->Start();
 }
 
 void ExtensionServiceTestBase::InitializeExtensionServiceHelper(
     bool autoupdate_enabled) {
   ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
   FilePath path_ = temp_dir_.path();
   path_ = path_.Append(FILE_PATH_LITERAL("TestingExtensionsPath"));
@@ skipping 3497 matching lines @@
     list[0] = sync_change;
 
     // Should again do nothing.
     service_->ProcessSyncChanges(FROM_HERE, list);
     EXPECT_TRUE(service_->GetExtensionById(good_crx, false));
   }
 }
 
 TEST_F(ExtensionServiceTest, ProcessSyncDataSettings) {
   InitializeEmptyExtensionService();
+  InitializeExtensionProcessManager();
   TestSyncProcessorStub processor;
   service_->MergeDataAndStartSyncing(syncable::EXTENSIONS, SyncDataList(),
       &processor);
 
   InstallCrx(data_dir_.AppendASCII("good.crx"), true);
   EXPECT_TRUE(service_->IsExtensionEnabled(good_crx));
   EXPECT_FALSE(service_->IsIncognitoEnabled(good_crx));
 
   sync_pb::EntitySpecifics specifics;
   sync_pb::ExtensionSpecifics* ext_specifics =
@@ skipping 337 matching lines @@
   ASSERT_FALSE(AddPendingSyncInstall());
 
   // Wait for the external source to install.
   WaitForCrxInstall(crx_path_, true);
   ASSERT_TRUE(IsCrxInstalled());
 
   // Now that the extension is installed, sync request should fail
   // because the extension is already installed.
   ASSERT_FALSE(AddPendingSyncInstall());
 }