[Android] Add a delay to webapp install button accept

This adds a short delay before buttons in the
Add to Homescreen/Install webapp dialog accept
clicks.

It also adds tracking for multiple clicks to
mirror the behavior on the Desktop side, as
per input_event_activation_protector.cc.

(cherry picked from commit 35f44be)

Bug: 1452230
Change-Id: I44d5df24659f9438528c766fe1c0058ea597369b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4664276
Reviewed-by: Lijin Shen <lazzzis@google.com>
Code-Coverage: Findit <findit-for-me@appspot.gserviceaccount.com>
Commit-Queue: Finnur Thorarinsson <finnur@chromium.org>
Reviewed-by: Ella Ge <eirage@chromium.org>
Reviewed-by: Theresa Sullivan <twellington@chromium.org>
Cr-Original-Commit-Position: refs/heads/main@{#1166456}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4677337
Cr-Commit-Position: refs/branch-heads/5845@{#428}
Cr-Branched-From: 5a5dff6-refs/heads/main@{#1160321}

components/browser_ui/modaldialog/android/java/src/org/chromium/components/browser_ui/modaldialog/ModalDialogView.java

@@ -70,7 +70,7 @@ public class ModalDialogView extends BoundedLinearLayout implements View.OnClick
     private Runnable mOnTouchFilteredCallback;
     private ViewGroup mFooterContainer;
     private TextView mFooterMessageView;
-    private long mEnterAnimationMidpointTimestamp = -1;
+    private long mStartProtectingButtonTimestamp = -1;
     // The duration for which dialog buttons should not react to any tap event after this view is
     // displayed to prevent potentially unintentional user interactions. A value of zero turns off
     // this kind of tap-jacking protection.
@@ -144,11 +144,17 @@ private boolean isWithinButtonTapProtectionPeriod() {
         if (mButtonTapProtectionDurationMs == 0) return false;
 
         // The view has not even started animating yet.
-        if (mEnterAnimationMidpointTimestamp < 0) return true;
+        if (mStartProtectingButtonTimestamp < 0) return true;
+
+        // Calculate whether we are still within the button protection period and reset the timer to
+        // prevent further tapjacking vectors.
+        long timestamp = TimeUtils.elapsedRealtimeMillis();
+        boolean shortEventAfterLastEvent =
+                timestamp <= mStartProtectingButtonTimestamp + mButtonTapProtectionDurationMs;
+        mStartProtectingButtonTimestamp = timestamp;
 
         // True if not showing for sufficient time.
-        return TimeUtils.elapsedRealtimeMillis()
-                <= mEnterAnimationMidpointTimestamp + mButtonTapProtectionDurationMs;
+        return shortEventAfterLastEvent;
     }
 
     /**
@@ -158,8 +164,7 @@ private boolean isWithinButtonTapProtectionPeriod() {
     void onEnterAnimationStarted(long animationDuration) {
         // Start button protection as soon as dialog is presented, but timer is kicked off in the
         // middle of the animation.
-        mEnterAnimationMidpointTimestamp =
-                TimeUtils.elapsedRealtimeMillis() + animationDuration / 2;
+        mStartProtectingButtonTimestamp = TimeUtils.elapsedRealtimeMillis() + animationDuration / 2;
     }
 
     /**

components/webapps/browser/android/BUILD.gn

@@ -45,6 +45,7 @@ android_library("java") {
     "//third_party/androidx:androidx_annotation_annotation_java",
     "//third_party/androidx:androidx_recyclerview_recyclerview_java",
     "//ui/android:ui_no_recycler_view_java",
+    "//ui/android:ui_utils_java",
     "//url:gurl_java",
   ]
   srcjar_deps = [

components/webapps/browser/android/java/src/org/chromium/components/webapps/AddToHomescreenDialogView.java

@@ -24,6 +24,7 @@
 import androidx.annotation.VisibleForTesting;
 
 import org.chromium.base.ContextUtils;
+import org.chromium.ui.UiUtils;
 import org.chromium.ui.base.ViewUtils;
 import org.chromium.ui.modaldialog.DialogDismissalCause;
 import org.chromium.ui.modaldialog.ModalDialogManager;
@@ -129,6 +130,8 @@ public void afterTextChanged(Editable editableText) {
                                 R.string.cancel)
                         .with(ModalDialogProperties.CUSTOM_VIEW, mParentView)
                         .with(ModalDialogProperties.CANCEL_ON_TOUCH_OUTSIDE, true)
+                        .with(ModalDialogProperties.BUTTON_TAP_PROTECTION_PERIOD_MS,
+                                UiUtils.PROMPT_INPUT_PROTECTION_SHORT_DELAY_MS)
                         .build();
         mModalDialogManager.showDialog(mDialogModel, ModalDialogManager.ModalDialogType.TAB);
     }