Omnibox UI Experiments: Make suggestions dropdown match omnibox width.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index dd8a2e27bb8ec63fa83f773cc4cfc866f07e4d9f..64366ce0f0aef84ba4f69e5b3ea317e1806762c4 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2982,6 +2982,12 @@ const FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kOmniboxUIVerticalLayoutDescription, kOsDesktop,
      FEATURE_VALUE_TYPE(omnibox::kUIExperimentVerticalLayout)},
 
+    {"omnibox-ui-suggestions-dropdown-width",

[Peter Kasting, 2017/06/05 18:25:44]

Nit: The name of the flag/associated variables sound like they'll take a width
arg:

  --omnibox-blah-width=357

You might consider something like "omnibox-ui-narrow-dropdown" instead, which
doesn't sound like it requires an argument (to me).

[tommycli, 2017/06/05 22:39:20]

Done.

+     flag_descriptions::kOmniboxUISuggestionsDropdownWidthName,
+     flag_descriptions::kOmniboxUISuggestionsDropdownWidthDescription,
+     kOsDesktop,
+     FEATURE_VALUE_TYPE(omnibox::kUIExperimentSuggestionsDropdownWidth)},
+
     {"omnibox-ui-vertical-margin",
      flag_descriptions::kOmniboxUIVerticalMarginName,
      flag_descriptions::kOmniboxUIVerticalMarginDescription, kOsDesktop,