[iOS] Re-enable navigation test

Tests are passing locally.

Fixed: 1054372
Change-Id: I6ad38e4ea1576eef974c542e7b03dd85637f883c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2074257Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746397}

ios/chrome/browser/web/navigation_egtest.mm

@@ -562,8 +562,7 @@ std::unique_ptr<net::test_server::HttpResponse> WindowLocationHashHandlers(
 
 // Tests that navigating forward from a WebUI URL works when resuming from
 // session restore. This is a regression test for https://crbug.com/814790.
-// Flaky: https://crbug.com/1054372
-- (void)DISABLED_testRestoreHistoryToWebUIAndNavigateForward {
+- (void)testRestoreHistoryToWebUIAndNavigateForward {
   GREYAssertTrue(self.testServer->Start(), @"Test server failed to start.");
   const GURL destinationURL = self.testServer->GetURL(kSimpleFileBasedTestURL);
   [ChromeEarlGrey loadURL:GURL("chrome://version")];
@@ -603,8 +602,7 @@ std::unique_ptr<net::test_server::HttpResponse> WindowLocationHashHandlers(
 
 // Tests that restoring a placeholder URL is correctly restored.  This is a
 // regression test from http://crbug.com/1011758.
-// Flaky: https://crbug.com/1054372
-- (void)DISABLED_testRestoreHistoryToPlaceholderURL {
+- (void)testRestoreHistoryToPlaceholderURL {
   GREYAssertTrue(self.testServer->Start(), @"Test server failed to start.");
   const GURL destinationURL("chrome://crash");
   [ChromeEarlGrey loadURL:destinationURL];