Fix stale cached parameters for search term chip

When caching Finch parameters for search term chip in Grid tab switcher
(enable_search_term_chip and enable_search_term_chip_adaptive_icon) in
http://crrev.com/c/2114165, they weren't added to ChromeCachedFlags.
This made these parameters stuck at default value.

This CL fixes this issue.

Bug: 1048255, 1067145
Change-Id: I3a764e84b74735ee342426676059bac1738429d9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2133627
Auto-Submit: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755800}

chrome/android/java/src/org/chromium/chrome/browser/ChromeCachedFlags.java

@@ -72,6 +72,8 @@ public class ChromeCachedFlags {
                 StartSurfaceConfiguration.START_SURFACE_HIDE_INCOGNITO_SWITCH,
                 StartSurfaceConfiguration.START_SURFACE_VARIATION,
                 TabContentManager.ALLOW_TO_REFETCH_TAB_THUMBNAIL_VARIATION,
+                TabUiFeatureUtilities.ENABLE_SEARCH_CHIP,
+                TabUiFeatureUtilities.ENABLE_SEARCH_CHIP_ADAPTIVE,
                 TabUiFeatureUtilities.ZOOMING_MIN_MEMORY,
                 TabUiFeatureUtilities.ZOOMING_MIN_SDK,
                 TabUiFeatureUtilities.SKIP_SLOW_ZOOMING,