Add logging for |old_ink_drop_state| when ink drop DCHECKs fail.

ui/views/animation/square_ink_drop_ripple.cc

Index: ui/views/animation/square_ink_drop_ripple.cc
diff --git a/ui/views/animation/square_ink_drop_ripple.cc b/ui/views/animation/square_ink_drop_ripple.cc
index 64def3348ec3f48bb8847b8f74bba7ef6088d172..6a635a5e8cf6a15a4e10b615ffe32e4b5eef5a30 100644
--- a/ui/views/animation/square_ink_drop_ripple.cc
+++ b/ui/views/animation/square_ink_drop_ripple.cc
@@ -280,7 +280,9 @@ void SquareInkDropRipple::AnimateStateChange(
       }
       break;
     case InkDropState::ACTION_PENDING:
-      DCHECK(old_ink_drop_state == InkDropState::HIDDEN);
+      DCHECK_EQ(InkDropState::HIDDEN, old_ink_drop_state)
+          << " old_ink_drop_state=" << ToString(old_ink_drop_state);
+      ;
       AnimateToOpacity(visible_opacity_,
                        GetAnimationDuration(ACTION_PENDING_FADE_IN),
                        ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET,
@@ -301,7 +303,8 @@ void SquareInkDropRipple::AnimateStateChange(
       break;
     case InkDropState::ACTION_TRIGGERED: {
       DCHECK(old_ink_drop_state == InkDropState::HIDDEN ||
-             old_ink_drop_state == InkDropState::ACTION_PENDING);
+             old_ink_drop_state == InkDropState::ACTION_PENDING)
+          << " old_ink_drop_state=" << ToString(old_ink_drop_state);
       if (old_ink_drop_state == InkDropState::HIDDEN) {
         AnimateStateChange(old_ink_drop_state, InkDropState::ACTION_PENDING,
                            animation_observer);
@@ -323,7 +326,8 @@ void SquareInkDropRipple::AnimateStateChange(
       break;
     }
     case InkDropState::ALTERNATE_ACTION_PENDING:
-      DCHECK(old_ink_drop_state == InkDropState::ACTION_PENDING);
+      DCHECK_EQ(InkDropState::ACTION_PENDING, old_ink_drop_state)
+          << " old_ink_drop_state=" << ToString(old_ink_drop_state);
       AnimateToOpacity(visible_opacity_,
                        GetAnimationDuration(ALTERNATE_ACTION_PENDING),
                        ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET,
@@ -339,7 +343,8 @@ void SquareInkDropRipple::AnimateStateChange(
                          gfx::Tween::EASE_IN, animation_observer);
       break;
     case InkDropState::ALTERNATE_ACTION_TRIGGERED: {
-      DCHECK(old_ink_drop_state == InkDropState::ALTERNATE_ACTION_PENDING);
+      DCHECK_EQ(InkDropState::ALTERNATE_ACTION_PENDING, old_ink_drop_state)
+          << " old_ink_drop_state=" << ToString(old_ink_drop_state);
       base::TimeDelta visible_duration =
           GetAnimationDuration(ALTERNATE_ACTION_TRIGGERED_TRANSFORM) -
           GetAnimationDuration(ALTERNATE_ACTION_TRIGGERED_FADE_OUT);