Adds animation as feature variation to keyboard accessory.

chrome/browser/ui/android/autofill/autofill_keyboard_accessory_view.h

Index: chrome/browser/ui/android/autofill/autofill_keyboard_accessory_view.h
diff --git a/chrome/browser/ui/android/autofill/autofill_keyboard_accessory_view.h b/chrome/browser/ui/android/autofill/autofill_keyboard_accessory_view.h
index 47a2d77d8f69f7ae0057c5eb131b0ba69f9dcc9e..9257dc7bb9de202adb675bd9b07b0ee45b2303c9 100644
--- a/chrome/browser/ui/android/autofill/autofill_keyboard_accessory_view.h
+++ b/chrome/browser/ui/android/autofill/autofill_keyboard_accessory_view.h
@@ -20,11 +20,13 @@ class AutofillPopupController;
 
 // A suggestion view that acts as an alternative to the field-attached popup
 // window. This view appears above the keyboard and spans the width of the
-// screen, condensing rather than overlaying the content area. Enable via
-// --enable-autofill-keyboard-accessory-view.
+// screen, condensing rather than overlaying the content area.
 class AutofillKeyboardAccessoryView : public AutofillPopupView {
  public:
-  explicit AutofillKeyboardAccessoryView(AutofillPopupController* controller);
+  AutofillKeyboardAccessoryView(AutofillPopupController* controller,
+                                unsigned int animation_duration_millis,

[please use gerrit instead, 2017/05/15 14:37:29]

Let's keep signedness consistent throughout. This param is unsigned, but it's
stored into a signed member variable.

[csashi, 2017/05/15 20:07:26]

Done.

+                                bool should_limit_label_width,
+                                bool is_first_suggestion_a_hint);
 
   // --------------------------------------------------------------------------
   // Methods called from Java via JNI
@@ -59,6 +61,16 @@ class AutofillKeyboardAccessoryView : public AutofillPopupView {
 
   AutofillPopupController* controller_;  // weak.
 
+  const int animation_duration_millis_;  // If 0, don't animate suggestion view.
+
+  // If true, limits label width to 1/2 device's pixel width.
+  const bool should_limit_label_width_;
+
+  // If true and |animation_duration_millis_| > 0, we reverse the animation and
+  // scroll the first suggestion (which is a non-fillable hint) out of the
+  // viewport at the end of the reversed animation.
+  const bool is_first_suggestion_a_hint_;
+
   // The index of the last item the user long-pressed (they will be shown a
   // confirmation dialog).
   int deleting_index_;