Fix app_shell CHECK failure on startup on Linux

apps/shell/browser/shell_browser_main_parts.cc

 // Copyright 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 "apps/shell/browser/shell_browser_main_parts.h"
 
 #include "apps/shell/browser/shell_browser_context.h"
 #include "apps/shell/browser/shell_browser_main_delegate.h"
 #include "apps/shell/browser/shell_desktop_controller.h"
 #include "apps/shell/browser/shell_extension_system.h"
 #include "apps/shell/browser/shell_extension_system_factory.h"
 #include "apps/shell/browser/shell_extensions_browser_client.h"
 #include "apps/shell/common/shell_extensions_client.h"
 #include "base/run_loop.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "content/public/common/result_codes.h"
 #include "content/shell/browser/shell_devtools_delegate.h"
 #include "content/shell/browser/shell_net_log.h"
 #include "extensions/browser/browser_context_keyed_service_factories.h"
 #include "extensions/browser/extension_system.h"
 #include "ui/aura/window_tree_host.h"
+#include "ui/base/ime/input_method_initializer.h"
 #include "ui/base/resource/resource_bundle.h"
 
 #if defined(OS_CHROMEOS)
 #include "apps/shell/browser/shell_network_controller_chromeos.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #endif
 
 using content::BrowserContext;
 using extensions::Extension;
 using extensions::ExtensionSystem;
@@ skipping 25 matching lines @@
 }
 
 void ShellBrowserMainParts::PreMainMessageLoopStart() {
   // TODO(jamescook): Initialize touch here?
 }
 
 void ShellBrowserMainParts::PostMainMessageLoopStart() {
 #if defined(OS_CHROMEOS)
   chromeos::DBusThreadManager::Initialize();
   network_controller_.reset(new ShellNetworkController);
+#else
+  // Non-Chrome OS platforms are for developer convenience, so use a test IME.
+  ui::InitializeInputMethodForTesting();
 #endif
 }
 
 void ShellBrowserMainParts::PreEarlyInitialization() {
 }
 
 int ShellBrowserMainParts::PreCreateThreads() {
   // TODO(jamescook): Initialize chromeos::CrosSettings here?
 
   // Return no error.
@@ skipping 70 matching lines @@
 }
 
 void ShellBrowserMainParts::CreateExtensionSystem() {
   DCHECK(browser_context_);
   extension_system_ = static_cast<ShellExtensionSystem*>(
       ExtensionSystem::Get(browser_context_.get()));
   extension_system_->InitForRegularProfile(true);
 }
 
 }  // namespace apps