Revise NativeWidgetWin focus hack; force focus on restore.

Remove NativeWidgetWin::RestoreFocusOnActivate's built-in hack.
Always use kReasonFocusRestore in FocusManager::RestoreFocusedView().
Always run FocusManager::SetFocusedViewWithReason with kReasonFocusRestore.
(this clears and resets child HWND focus, needed for the hack)

Fixes initial omnibox focus on Win with --enable-views-textfield; plus:
interactive_ui_tests.exe --gtest_filter=BrowserFocusTest.ClickingMovesFocus --enable-views-textfield
views_unittests.exe --gtest_filter=BubbleDelegateTest.InitiallyFocusedView --enable-views-textfield
(test updated to have the proper expectation, removing a non-Aura Win hack)
Doesn't regress child HWND focus like the previous attempt: http://crrev.com/186235

Remove SearchTextfieldView Textfield subclass; make RequestFocus non-virtual.
TODO(followup): Polish find-bar focus behavior as needed in followups.

BUG=125976,131660,224591,225963
TEST=View and web-contents focus restoration on minimize/restore; repro steps in bugs. Find bar works as expected (may need attention in followups). Tests pass with --enable-views-textfield.
R=ben@chromium.org

Review URL: https://chromiumcodereview.appspot.com/13227002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@192493 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed