Content indexing : Disabled feature by default

Bug: 1035266
Change-Id: Ied9ff05e0bedf2d9c4470d4ed68055e977713ac1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1973551Reviewed-by: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726141}

chrome/browser/android/chrome_feature_list.cc

@@ -382,7 +382,7 @@ const base::Feature kContactsPickerSelectAll{"ContactsPickerSelectAll",
                                              base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::Feature kContentIndexingDownloadHome{
-    "ContentIndexingDownloadHome", base::FEATURE_ENABLED_BY_DEFAULT};
+    "ContentIndexingDownloadHome", base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::Feature kContentIndexingNTP{"ContentIndexingNTP",
                                         base::FEATURE_DISABLED_BY_DEFAULT};