[Omnibox] Add 7 and 9 options for max autocomplete suggestions

Also, add a flag that disables the InstantExtended limit on
search suggestions.

Bug: 974852
Change-Id: I9f3a443b89c83cc4fa958756e25448688d9e0370
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1725172
Commit-Queue: Patrick Noland <[email protected]>
Reviewed-by: Justin Donnelly <[email protected]>
Cr-Commit-Position: refs/heads/master@{#682527}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 4727217a..6464a90 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -1319,6 +1319,11 @@
     "the current page is provided as the first suggestion without a title. "
     "Enabling this flag causes the title to be displayed.";
 
+const char kOmniboxDisableInstantExtendedLimitName[] =
+    "Disable the 'instant extended' limit on search suggestions";
+const char kOmniboxDisableInstantExtendedLimitDescription[] =
+    "Effectively doubles the max number of Google-provided search suggestions "
+    "on Android by disabling the 'Instant Extended' check.";
 const char kOmniboxGroupSuggestionsBySearchVsUrlName[] =
     "Omnibox Group Suggestions By Search vs URL";
 const char kOmniboxGroupSuggestionsBySearchVsUrlDescription[] =