Tested the same on win8.1 chrome version 49.0.2623.87 and canary - ? in address bar and hitting enter does nothing

This can be seen from M20 builds to latest canary

Mac behavior : doesn't accept ? in address bar

Firefox/IE behavior : ? in address bar redirects to google.co.in

This is not a web content handling issue.  Please don't use Component:Blink.

This is a sad, minor side effect of the fact that Chrome uses "?" in the omnibox to allow the user force the user to force a search.  In other words, it's an indication to Chrome that the user doesn't want any URL suggestions, only queries.

You can search for "?" by typing "??" in the omnibox.  Once you type the single question mark, Chrome thinks, "okay, tell me what you want to search for."  The second "?" tells Chrome what to search for.

It should be possible to fix this and keep the old behavior (force query) at the same time as allowing searches directly for "?".  I don't have time to do this myself however.

Fixing  bug 267629  would make this less ambiguous.

thomasanderson@ will work on this, but doesn't have an account yet so I can't assign this directly to him. Assigning to myself in the meantime as a placeholder.

Note that this bug may be mutually exclusive with  bug 267629 .  The only way it wouldn't be is if we implement that such that backspacing from the keyword search mode leaves the address bar containing a question mark (and maybe a space, a la how we handle backspacing out of keyword mode in other cases today).

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/00687d006b3b838d1274f52a2dee455ce988d2fd

commit 00687d006b3b838d1274f52a2dee455ce988d2fd
Author: thomasanderson <thomasanderson@google.com>
Date: Wed Jun 08 16:06:34 2016

Interpret '?' and Ctrl-K or Ctrl-E as putting omnibox in keyword search mode for Default Search Provider.

When the user presses Ctrl-K or Ctrl-E:
Transition the user into keyword mode using their default search provider.  Pressing Ctrl-K will give the omnibox focus, and will display "Search Google:" on the left.  If the user has already entered text into the omnibox and presses Ctrl-K, their text will be preserved, but they will be transitioned into keyword mode anyway.  If the user is already in keyword mode (even if it's with a non-default search provider), the text they have entered will become selected.  Upon pressing backspace, they will be left with an empty omnibox.

When the user types '?' into the omnibox:
If the user types or pastes a '?' at the beginning of their (possibly empty) input text, transition them into keyword mode with their default search provider.  Upon pressing backspace, the omnibox will be left '?' (and their input).

Remove forced queries.  We should be able to search for '?' directly.

BUG= 267629 , 592540 

Review-Url: https://codereview.chromium.org/1855423003
Cr-Commit-Position: refs/heads/master@{#398580}

[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/autocomplete/autocomplete_browsertest.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/autocomplete/search_provider_unittest.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac_unittest.mm
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac_browsertest.mm
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/extensions/extension_message_bubble_browsertest.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/location_bar/location_bar.h
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/omnibox/omnibox_view_browsertest.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/search/instant_extended_interactive_uitest.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/search/instant_extended_manual_interactive_uitest.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/search/instant_test_utils.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/views/location_bar/location_bar_view.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/views/location_bar/location_icon_view.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/views/omnibox/omnibox_view_views.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/browser/ui/views/omnibox/omnibox_view_views.h
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/chrome/test/base/ui_test_utils.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/metrics/proto/omnibox_input_type.proto
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/autocomplete_input.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/autocomplete_input.h
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/autocomplete_input_unittest.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/autocomplete_provider.h
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/autocomplete_result.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/base_search_provider.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/bookmark_provider.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/builtin_provider.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/history_quick_provider.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/history_url_provider.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/keyword_provider.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/omnibox_edit_model.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/omnibox_edit_model.h
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/omnibox_edit_unittest.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/omnibox_view.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/omnibox_view.h
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/search_provider.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/search_suggestion_parser.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/omnibox/browser/shortcuts_provider.cc
[modify] https://crrev.com/00687d006b3b838d1274f52a2dee455ce988d2fd/components/search_engines/template_url_unittest.cc

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/chrome/ios_internal.git/+/e73e31840701e5d31e2361c0e958761175402ba5

commit e73e31840701e5d31e2361c0e958761175402ba5
Author: sdefresne <sdefresne@google.com>
Date: Thu Jun 09 10:24:56 2016

Fixed now?

Verified in 53.0.2767.0 canary iOS, iPhone 6 iOS 9.2.1, iPad mini 9.3.1
"Question mark" symbol is searchable.

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/chrome/ios_internal.git/+/3e7e2596400321a7e71016807076c2e3cfad0d02

commit 3e7e2596400321a7e71016807076c2e3cfad0d02
Author: rohitrao <rohitrao@google.com>
Date: Thu Jun 23 05:19:57 2016