Default typed omnibox navigations to https: Exclude certain hostnames

This CL excludes disables HTTPS upgrades for IP addresses and adds tests
for non-unique hostnames.

Bug: 1141691
Change-Id: Ib697d254abb32c375e0eda40b0f22fe521175f02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2616978
Commit-Queue: Mustafa Emre Acer <meacer@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Reviewed-by: Chris Thompson <cthomp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842152}

components/omnibox/browser/autocomplete_input.cc

@@ -153,7 +153,9 @@ void AutocompleteInput::Init(
   if (should_use_https_as_default_scheme_ &&
       type_ == metrics::OmniboxInputType::URL &&
       scheme_ == base::ASCIIToUTF16(url::kHttpScheme) &&
-      !base::StartsWith(text_, scheme_, base::CompareCase::INSENSITIVE_ASCII)) {
+      !base::StartsWith(text_, scheme_, base::CompareCase::INSENSITIVE_ASCII) &&
+      !url::HostIsIPAddress(base::UTF16ToUTF8(text)) &&
+      !net::IsHostnameNonUnique(base::UTF16ToUTF8(text))) {
     // Use HTTPS as the default scheme for URLs that are typed without a scheme.
     // Inputs of type UNKNOWN can still be valid URLs, but these will be mainly
     // intranet hosts which we don't to upgrade to HTTPS so we only check the

components/omnibox/browser/autocomplete_input_unittest.cc

@@ -384,6 +384,10 @@ TEST(AutocompleteInputTest, UpgradeTypedNavigationsToHttps) {
       {ASCIIToUTF16("example.com"), GURL("https://example.com"), true},
       // Non-URL inputs shouldn't be upgraded.
       {ASCIIToUTF16("example query"), GURL(), false},
+      // IP addresses shouldn't be upgraded.
+      {ASCIIToUTF16("127.0.0.1"), GURL("http://127.0.0.1"), false},
+      // Non-unique hostnames shouldn't be upgraded.
+      {ASCIIToUTF16("site.test"), GURL("http://site.test"), false},
       // Fully typed URLs shouldn't be upgraded.
       {ASCIIToUTF16("http://example.com"), GURL("http://example.com"), false},
       {ASCIIToUTF16("HTTP://EXAMPLE.COM"), GURL("http://example.com"), false},