Add OnCompositionChanged and OnTextCommitted to RemoteInputMethodPrivateWin

Add OnCompositionChanged and OnTextCommitted to RemoteInputMethodPrivateWin

This CL adds two new methods OnCompositionChanged and OnTextCommitted to RemoteInputMethodPrivateWin so that corresponding events occurred in the metro_driver process can be forwarded to RemoteInputMethodWin. These new methods will work as real handlelrs of MetroViewerHostMsg_ImeCompositionChanged and MetroViewerHostMsg_ImeTextCommitted messages.

In my first design, MetroViewerHostMsg_ImeCompositionChanged and MetroViewerHostMsg_ImeTextCommitted are directly handled in aura::RemoteRootWindowHostWin. However I changed my mind because how these IPC messages should be handled is a kind of implementation details of which only metro_driver::TextService implementation and ui::RemoteInputMethodWin should take care. This is why I moved these IPC handler from aura::RemoteRootWindowHostWin in ui::RemoteInputMethodPrivateWin.

BUG=164964
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=237047

[yukawa, 2013-11-25 04:40:42]

Hi,

This CL is a subset of differences between
https://codereview.chromium.org/83233002/ patch set #1 and #2.

In patch set #1 in https://codereview.chromium.org/83233002/,
RemoteRootWindowHostWin directly used TextInputClient as follows.
  ui::TextInputClient* text_input_client = input_method->GetTextInputClient();
  if (!text_input_client)
    return;
  text_input_client->InsertText(text);
However, I guess we might want keep direct use of ui::TextInputClient inside
ui/base/ime/* whenever possible. With this CL, all the implementation details
will be moved into ui/base/ime/remote_input_method_win.cc.

Any thoughts?

[yukawa, 2013-11-25 06:39:22]

Oh, nona-san seems to be on vacation.

Komatsu-san, could you take a look?

[Hiro Komatsu, 2013-11-25 06:50:49]

lgtm

[commit-bot: I haz the power, 2013-11-25 06:54:34]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yukawa@chromium.org/85063002/50001

[commit-bot: I haz the power, 2013-11-25 08:41:24]

Change committed as 237047