Fix Flash assert.

chrome/browser/component_updater/pepper_flash_component_installer.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/component_updater/pepper_flash_component_installer.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
@@ skipping 144 matching lines @@
 
     // If the version is newer, remove the old one first.
     PluginService::GetInstance()->UnregisterInternalPlugin(plugin.path);
     break;
   }
 
   PluginService::GetInstance()->RegisterInternalPlugin(
       plugin_info.ToWebPluginInfo(), true);
   PluginService::GetInstance()->RefreshPlugins();
 }
+
+void NotifyPathServiceAndChrome(const base::FilePath& path,
+                                const Version& version) {
+  PathService::Override(chrome::DIR_PEPPER_FLASH_PLUGIN, path);
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      base::Bind(&RegisterPepperFlashWithChrome, path, version));
+}
 #endif  // !defined(OS_LINUX) && defined(GOOGLE_CHROME_BUILD)
 
 #if defined(GOOGLE_CHROME_BUILD)
 class FlashComponentInstallerTraits : public ComponentInstallerTraits {
  public:
   FlashComponentInstallerTraits();
   ~FlashComponentInstallerTraits() override {}
 
  private:
   // The following methods override ComponentInstallerTraits.
@@ skipping 44 matching lines @@
 }
 
 void FlashComponentInstallerTraits::ComponentReady(
     const base::Version& version,
     const base::FilePath& path,
     std::unique_ptr<base::DictionaryValue> manifest) {
 #if !defined(OS_LINUX)
   // Installation is done. Now tell the rest of chrome. Both the path service
   // and to the plugin service. On Linux, a restart is required to use the new
   // Flash version, so we do not do this.
-  PathService::Override(chrome::DIR_PEPPER_FLASH_PLUGIN, path);
-  RegisterPepperFlashWithChrome(path.Append(chrome::kPepperFlashPluginFilename),
-                                version);
+  BrowserThread::GetBlockingPool()->PostTask(
+      FROM_HERE, base::Bind(&NotifyPathServiceAndChrome, path, version));
 #endif  // !defined(OS_LINUX)
 }
 
 bool FlashComponentInstallerTraits::VerifyInstallation(
     const base::DictionaryValue& manifest,
     const base::FilePath& install_dir) const {
   Version unused;
   return chrome::CheckPepperFlashManifest(manifest, &unused);
 }
 
@@ skipping 28 matching lines @@
   std::unique_ptr<ComponentInstallerTraits> traits(
       new FlashComponentInstallerTraits);
   // |cus| will take ownership of |installer| during installer->Register(cus).
   DefaultComponentInstaller* installer =
       new DefaultComponentInstaller(std::move(traits));
   installer->Register(cus, base::Closure());
 #endif  // defined(GOOGLE_CHROME_BUILD)
 }
 
 }  // namespace component_updater