Make Textfield::GetTextInputClient() return non-null, even if readonly

ui/views/controls/textfield/textfield.cc

Index: ui/views/controls/textfield/textfield.cc
diff --git a/ui/views/controls/textfield/textfield.cc b/ui/views/controls/textfield/textfield.cc
index 070924a4a120e7aa26e001412113300072c9073d..ccb433cf421947069cdeb3774f8421c7685a8c5f 100644
--- a/ui/views/controls/textfield/textfield.cc
+++ b/ui/views/controls/textfield/textfield.cc
@@ -700,7 +700,7 @@ bool Textfield::OnKeyPressed(const ui::KeyEvent& event) {
 }
 
 ui::TextInputClient* Textfield::GetTextInputClient() {
-  return read_only_ ? NULL : this;

[msw, 2015/02/11 16:45:00]

I didn't add this logic (as you note in the CL description), I merely ported the
logic from NativeTextfieldViews in that cited CL. +CC suzhe, since this actually
originated from Jame's input method integration in
https://codereview.chromium.org/6675005

[tapted, 2015/02/11 23:29:08]

Thanks for the pointer! Updated the CL description. I had a dig through that
codereview too, and didn't see any red flags for this change, but I'll see what
suzhe thinks.

+  return this;
 }
 
 void Textfield::OnGestureEvent(ui::GestureEvent* event) {