Disable WallpaperManager test on MSAN bots.

chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc

 // Copyright 2014 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/chromeos/login/users/wallpaper/wallpaper_manager.h"
 
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/desktop_background/desktop_background_controller_observer.h"
 #include "ash/desktop_background/desktop_background_controller_test_api.h"
 #include "ash/display/display_manager.h"
@@ skipping 409 matching lines @@
 };
 
 IN_PROC_BROWSER_TEST_F(WallpaperManagerBrowserTestCrashRestore,
                        PRE_RestoreWallpaper) {
   LogIn(kTestUser1, kTestUser1Hash);
   wallpaper_manager_test_utils::WaitAsyncWallpaperLoadFinished();
 }
 
 // Test for crbug.com/270278. It simulates a browser crash and verifies if user
 // wallpaper is loaded.
+// Fails on the MSAN bots. See http://crbug.com/444477
+#if defined(MEMORY_SANITIZER)
+#define MAYBE_RestoreWallpaper DISABLED_RestoreWallpaper
+#else
+#define MAYBE_RestoreWallpaper RestoreWallpaper
+#endif
 IN_PROC_BROWSER_TEST_F(WallpaperManagerBrowserTestCrashRestore,
-                       RestoreWallpaper) {
+                       MAYBE_RestoreWallpaper) {
   EXPECT_EQ(1, LoadedWallpapers());
 }
 
 class WallpaperManagerBrowserTestCacheUpdate
     : public WallpaperManagerBrowserTest {
  public:
   virtual void SetUpCommandLine(CommandLine* command_line) override {
     command_line->AppendSwitchASCII(switches::kLoginUser, kTestUser1);
     command_line->AppendSwitchASCII(switches::kLoginProfile, "user");
   }
@@ skipping 341 matching lines @@
 
   WallpaperManager::Get()->SetDefaultWallpaperNow(std::string());
   wallpaper_manager_test_utils::WaitAsyncWallpaperLoadFinished();
 
   EXPECT_TRUE(wallpaper_manager_test_utils::ImageIsNearColor(
       controller_->GetWallpaper(),
       wallpaper_manager_test_utils::kSmallDefaultWallpaperColor));
 }
 
 }  // namespace chromeos