Re-enable ExtensionCrxInstallerTest.InstallToSharedLocation

BUG=492162
TEST=local run with repetition 1000x no single failure

Review URL: https://codereview.chromium.org/1155063005

Cr-Commit-Position: refs/heads/master@{#332830}
diff --git a/chrome/browser/extensions/crx_installer_browsertest.cc b/chrome/browser/extensions/crx_installer_browsertest.cc
index b0fe07d..abdbdf9 100644
--- a/chrome/browser/extensions/crx_installer_browsertest.cc
+++ b/chrome/browser/extensions/crx_installer_browsertest.cc
@@ -543,10 +543,7 @@
 }
 
 #if defined(OS_CHROMEOS)
-// This test is currently failing 25% of the time on the ChromiumOS bots.
-// Disabling until the issue can be resolved. (crbug.com/492162)
-IN_PROC_BROWSER_TEST_F(ExtensionCrxInstallerTest,
-                       DISABLED_InstallToSharedLocation) {
+IN_PROC_BROWSER_TEST_F(ExtensionCrxInstallerTest, InstallToSharedLocation) {
   base::ShadowingAtExitManager at_exit_manager;
   base::CommandLine::ForCurrentProcess()->AppendSwitch(
       chromeos::switches::kEnableExtensionAssetsSharing);