Support region selection for voice interaction session

chrome/browser/ui/ash/palette_delegate_chromeos.h

Index: chrome/browser/ui/ash/palette_delegate_chromeos.h
diff --git a/chrome/browser/ui/ash/palette_delegate_chromeos.h b/chrome/browser/ui/ash/palette_delegate_chromeos.h
index e153148f0c3cf48dcf330a71ece5ce83f27205c0..ac059a826dfa75faa82ded295784a0087406edf3 100644
--- a/chrome/browser/ui/ash/palette_delegate_chromeos.h
+++ b/chrome/browser/ui/ash/palette_delegate_chromeos.h
@@ -19,6 +19,10 @@
 class PrefChangeRegistrar;
 class Profile;
 
+namespace ash {
+class ScreenshotDelegate;
+}
+
 namespace chromeos {
 
 // A class which allows the Ash palette to perform chrome actions.
@@ -65,6 +69,9 @@ class PaletteDelegateChromeOS
       session_state_observer_;
   content::NotificationRegistrar registrar_;
 
+  std::unique_ptr<ash::ScreenshotDelegate>
+      voice_interaction_screenshot_delegate_;
+
   base::WeakPtrFactory<PaletteDelegateChromeOS> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PaletteDelegateChromeOS);