New accessibility virtual keyboard behavior in non-sticky mode.

ui/base/ime/input_method.h

Index: ui/base/ime/input_method.h
diff --git a/ui/base/ime/input_method.h b/ui/base/ime/input_method.h
index cfa5583192520437d31f190346e3ced9c8a9192e..ebe8bbc8cdd887df20d4934591e960d4e4f61376 100644
--- a/ui/base/ime/input_method.h
+++ b/ui/base/ime/input_method.h
@@ -15,6 +15,7 @@
 #include "build/build_config.h"
 #include "ui/base/ime/text_input_mode.h"
 #include "ui/base/ime/text_input_type.h"
+#include "ui/gfx/geometry/rect.h"
 
 namespace extensions {
 class InputImeApiTest;
@@ -160,6 +161,12 @@ class InputMethod {
   virtual void AddObserver(InputMethodObserver* observer) = 0;
   virtual void RemoveObserver(InputMethodObserver* observer) = 0;
 
+  // Set available screen bounds when virtual keyboard is active.
+  virtual void SetAvailableBounds(const gfx::Rect& new_bounds) {}

[sky, 2016/08/19 20:21:39]

Can you elaborate on why we need this? AFAICT it's always the bounds of the root
window. I would expect it to be the work area, but none-the-less why do we need
a setter if it's always going to be the same thing?

[hariank, 2016/08/19 20:32:11]

If the keyboard is closed, it is the bounds of the root window, but if it is
open, it is the available bounds of the root window (so not including the
keyboard area).

+
+  // Screen bounds of window not covered by virtual keyboard if it is active.
+  gfx::Rect available_bounds_;

[sky, 2016/08/19 20:21:39]

Again, style guide says fields should be private, not public or proected.

[hariank, 2016/08/19 20:32:11]

Ok, I'll make it private and add a getter to use in input_method_base.cc. 

+
  protected:
   friend class extensions::InputImeApiTest;