Convert enum to enum class for SquareInkDropRipple::ActivatedShape

Use enum class instead of enum for ActivatedShape
enum class is more type safety.

Bug: 940736
Change-Id: I377b57af89eb29199f31496b310d7adea414e711
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1850677
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704509}

ui/views/animation/square_ink_drop_ripple.cc

@@ -146,7 +146,7 @@ SquareInkDropRipple::SquareInkDropRipple(const gfx::Size& large_size,
                                          const gfx::Point& center_point,
                                          SkColor color,
                                          float visible_opacity)
-    : activated_shape_(ROUNDED_RECT),
+    : activated_shape_(ActivatedShape::kRoundedRect),
       visible_opacity_(visible_opacity),
       large_size_(large_size),
       large_corner_radius_(large_corner_radius),
@@ -542,10 +542,10 @@ void SquareInkDropRipple::GetCurrentTransforms(
 void SquareInkDropRipple::GetActivatedTargetTransforms(
     InkDropTransforms* transforms_out) const {
   switch (activated_shape_) {
-    case CIRCLE:
+    case ActivatedShape::kCircle:
       CalculateCircleTransforms(small_size_, transforms_out);
       break;
-    case ROUNDED_RECT:
+    case ActivatedShape::kRoundedRect:
       CalculateRectTransforms(small_size_, small_corner_radius_,
                               transforms_out);
       break;
@@ -555,10 +555,10 @@ void SquareInkDropRipple::GetActivatedTargetTransforms(
 void SquareInkDropRipple::GetDeactivatedTargetTransforms(
     InkDropTransforms* transforms_out) const {
   switch (activated_shape_) {
-    case CIRCLE:
+    case ActivatedShape::kCircle:
       CalculateCircleTransforms(large_size_, transforms_out);
       break;
-    case ROUNDED_RECT:
+    case ActivatedShape::kRoundedRect:
       CalculateRectTransforms(large_size_, small_corner_radius_,
                               transforms_out);
       break;

ui/views/animation/square_ink_drop_ripple.h

@@ -51,7 +51,7 @@ class SquareInkDropRippleTestApi;
 class VIEWS_EXPORT SquareInkDropRipple : public InkDropRipple {
  public:
   // The shape to use for the ACTIVATED/DEACTIVATED states.
-  enum ActivatedShape { CIRCLE, ROUNDED_RECT };
+  enum class ActivatedShape { kCircle, kRoundedRect };
 
   SquareInkDropRipple(const gfx::Size& large_size,
                       int large_corner_radius,