Profile chooser: change minimal height before scrolling to 40dp.

Bug: 869343
Change-Id: Ic3506c14a51fca41a8c5ee84587d5947976178df
Reviewed-on: https://chromium-review.googlesource.com/1172343
Commit-Queue: Vasilii Sukhanov <vasilii@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582553}

chrome/browser/ui/views/profiles/profile_chooser_view.cc

@@ -123,10 +123,8 @@ constexpr int kIconSize = 16;
 constexpr int kMenuEdgeMargin = 16;
 
 // If the bubble is too large to fit on the screen, it still needs to be at
-// least this tall to show the default items. The default items is what a signed
-// in user with 1 profile sees: account name, autofill home and 3 profile
-// actions.
-constexpr int kMinimumScrollableContentHeight = 340;
+// least this tall to show one row.
+constexpr int kMinimumScrollableContentHeight = 40;
 
 constexpr int kVerticalSpacing = 16;