[iOS] Disable failing Content Suggestions test

Disables ContentSuggestionsTestCase/testReloadPage which is failing on
iphone-device.

TBR=gambard@chromium.org

Bug: 1046258
Change-Id: I8688122f2daab124b063059b6187f5fe0a7a6026
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2024888Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735815}

ios/chrome/browser/ui/content_suggestions/content_suggestions_egtest.mm

@@ -175,6 +175,13 @@ GREYElementInteraction* CellWithMatcher(id<GREYMatcher> matcher) {
 // Tests that when the page is reloaded using the tools menu, the suggestions
 // are updated.
 - (void)testReloadPage {
+// TODO(crbug.com/1046258): fix for iphone-device and reenable.
+#if !TARGET_IPHONE_SIMULATOR
+  if (![ChromeEarlGrey isIPadIdiom]) {
+    EARL_GREY_TEST_DISABLED(@"Test disabled on iPhone devices.");
+  }
+#endif
+
   // Add 2 suggestions, persisted accross page loads.
   [ContentSuggestionsAppInterface addNumberOfSuggestions:2
                                 additionalSuggestionsURL:nil];