Support for Adaptive Handle Orientation

content/browser/renderer_host/input/touch_handle.h

Index: content/browser/renderer_host/input/touch_handle.h
diff --git a/content/browser/renderer_host/input/touch_handle.h b/content/browser/renderer_host/input/touch_handle.h
index c78a5b952a72e8c4f84300b316858424e02c110e..38270c5f3afac9d0b26eb188429757c2c9a144c1 100644
--- a/content/browser/renderer_host/input/touch_handle.h
+++ b/content/browser/renderer_host/input/touch_handle.h
@@ -22,6 +22,13 @@ enum TouchHandleOrientation {
   TOUCH_HANDLE_LEFT,
   TOUCH_HANDLE_CENTER,
   TOUCH_HANDLE_RIGHT,
+  TOUCH_HANDLE_LEFT_INVERTED,

[jdduke (slow), 2014/08/20 15:15:01]

I don't think we should add these until we actually start using them; otherwise
it's confusing.

Also, INVERTED and FLIPPED is somewhat confusing terminology.  I almost feel
like the drawables could be responsible for "automatically" inverting/flipping
themselves to stay visible, rather than having that be explicitly controlled,
which could greatly increase complexity.

+  TOUCH_HANDLE_RIGHT_INVERTED,
+  TOUCH_HANDLE_LEFT_FLIPPED,
+  TOUCH_HANDLE_RIGHT_FLIPPED,
+  TOUCH_HANDLE_LEFT_FLIPPED_INVERTED,
+  TOUCH_HANDLE_RIGHT_FLIPPED_INVERTED,
+  TOUCH_HANDLE_CENTER_INVERTED,
   TOUCH_HANDLE_ORIENTATION_UNDEFINED,
 };