Both Textfield and TextfieldViews were focusable and
alt-tab was setting the focus back to the Textfield, which
sets the focus to the its TextfieldViews. This fixes the issue
by making Textfield non focusable.

BUG=none
TEST=FocusTest is added to unittest.

Review URL: http://codereview.chromium.org/5988010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70624 0039d316-1c4b-4281-b951-d872f2087c98

It looks big, but most of change is simple signature change.

 Note: I need your advice on how to deal with WM_CHAR event on Win. Please see my comment below.

BUG=none
TEST=no new functionality. All tests should still pass.

Review URL: http://codereview.chromium.org/6034002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70553 0039d316-1c4b-4281-b951-d872f2087c98

(1) When there's blank space at the end of the string in the textfield and the
cursor is at the end, 'move cursor to previous word' should move the cursor at
the beginning of the last word.
(2) When there's blank space at the end of the string, and the cursor is at the
end of the last word, 'move cursor to next word' should move the cursor at the
end.
(3) Moving the cursor should make the cursor immediately visible. This is more
inline with how GTK+ cursors behave. For example, constantly pressing the
home-key in a GTK+ textfield makes the cursor visible for the duration of the
keypress.

BUG=none
TEST=NativeTextfieldViewsTest.CursorMovement

Review URL: http://codereview.chromium.org/5972008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70468 0039d316-1c4b-4281-b951-d872f2087c98

Pressing 0-9 in a textfield with caps lock turned on would generate shifted
keyevents, which it shouldn't. So distinguish between caps-lock and shift.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6068005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70452 0039d316-1c4b-4281-b951-d872f2087c98

BUG=none
TEST=TestOnKeyPressReturnValue is added.

Review URL: http://codereview.chromium.org/5964013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70424 0039d316-1c4b-4281-b951-d872f2087c98

This is based on the original CL http://codereview.chromium.org/3142008.
The key difference is
* This uses Textfield framework and NativeTextfieldView implements NativeTextfieldWrapper.
  This allows us to swap the implementation without recompling the tree and can start
  testing on bots.
* Changed the name of the model to TextfieldViewModel as TextfieldModel may be confusing
  as other Textfield implementations are not using it. I also changed to use string16 instead
  of gap buffer as it's enough for single line text. We can update the model to use GapBuffer when necessary.
* Changed to use string16 as that's what chrome codebase should use.
* Added a switch to turn on TextfieldView.

I also filled a couple of features such as:
  * selection by key
  * mouse actions (move cursor, selection)
  * used WordIterator, which is i18n compatible, to move cursor by word
  * blinking cursor

This is only for linux based build due to KeyStroke difference.

I'm going to move some of test utlity function in chrome/browser/automation/ui_controls to app/test
and will add more test once the migration is done.

BUG=none
TEST=new unit tests are added : NativeTestfieldViewTest and TextfieldViewModelTest.

Review URL: http://codereview.chromium.org/5857002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@69523 0039d316-1c4b-4281-b951-d872f2087c98