flags: remove enable-zero-suggest-redirect-to-chrome

This flag isn't needed any more, but the feature still is, per email discussion
with mpearson and jdonnelly.

Bug: None
Change-Id: I59cf49bef661245da9c40115b626875e351bd4f5
Reviewed-on: https://chromium-review.googlesource.com/c/1496559
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Mark Pearson <mpearson@chromium.org>
Auto-Submit: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636913}

chrome/browser/about_flags.cc

@@ -2689,11 +2689,6 @@ const FeatureEntry kFeatureEntries[] = {
      FEATURE_VALUE_TYPE(device::kNewUsbBackend)},
 #endif  // defined(OS_WIN)
 
-    {"enable-zero-suggest-redirect-to-chrome",
-     flag_descriptions::kEnableZeroSuggestRedirectToChromeName,
-     flag_descriptions::kEnableZeroSuggestRedirectToChromeDescription, kOsAll,
-     FEATURE_VALUE_TYPE(omnibox::kZeroSuggestRedirectToChrome)},
-
 #if defined(OS_ANDROID)
     {"omnibox-new-answer-layout",
      flag_descriptions::kOmniboxNewAnswerLayoutName,

chrome/browser/flag-metadata.json

@@ -2015,11 +2015,6 @@
     "owners": [ "jennyz", "xiyuan" ],
     "expiry_milestone": 75
   },
-  {
-    "name": "enable-zero-suggest-redirect-to-chrome",
-    "owners": [ "mpearson", "jdonnelly" ],
-    "expiry_milestone": 79
-  },
   {
     "name": "use_messages_google_com_domain",
     "owners": [ "azeemarshad", "khorimoto" ],

chrome/browser/flag_descriptions.cc

@@ -949,14 +949,6 @@ const char kEnableIncognitoWindowCounterDescription[] =
     "Shows the count of Incognito windows next to the Incognito icon on the "
     "toolbar.";
 
-const char kEnableZeroSuggestRedirectToChromeName[] =
-    "Experimental contextual omnibox suggestion";
-const char kEnableZeroSuggestRedirectToChromeDescription[] =
-    "Change omnibox contextual suggestions to an experimental source. Note "
-    "that this is not an on/off switch for contextual omnibox and it only "
-    "applies to suggestions provided before the user starts typing a URL or a "
-    "search query (i.e. zero suggest).";
-
 const char kEnableWasmBaselineName[] = "WebAssembly baseline compiler";
 const char kEnableWasmBaselineDescription[] =
     "Enables WebAssembly baseline compilation and tier up.";

chrome/browser/flag_descriptions.h

@@ -567,9 +567,6 @@ extern const char kEnableImageCaptureAPIDescription[];
 extern const char kEnableIncognitoWindowCounterName[];
 extern const char kEnableIncognitoWindowCounterDescription[];
 
-extern const char kEnableZeroSuggestRedirectToChromeName[];
-extern const char kEnableZeroSuggestRedirectToChromeDescription[];
-
 extern const char kEnableWasmBaselineName[];
 extern const char kEnableWasmBaselineDescription[];