[Autofill Assistant] Fixed talkback view size issue.

Bug: b/175776310
Change-Id: Ifff4467bb674c61fc2ca5b1cb4bd715585cbe601
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2595536
Commit-Queue: Clemens Arbesser <arbesser@google.com>
Commit-Queue: Michele Mancina <micantox@google.com>
Commit-Queue: Marian Fechete <marianfe@google.com>
Auto-Submit: Clemens Arbesser <arbesser@google.com>
Reviewed-by: Michele Mancina <micantox@google.com>
Reviewed-by: Mathias Carlen <mcarlen@chromium.org>
Reviewed-by: Marian Fechete <marianfe@google.com>
Cr-Commit-Position: refs/heads/master@{#838017}

chrome/android/features/autofill_assistant/java/src/org/chromium/chrome/browser/autofill_assistant/AssistantRootViewContainer.java

@@ -27,6 +27,7 @@ public class AssistantRootViewContainer
     private final BrowserControlsStateProvider mBrowserControlsStateProvider;
     private Rect mVisibleViewportRect = new Rect();
     private float mTalkbackSheetSizeFraction;
+    private boolean mTalkbackResizingDisabled;
 
     public AssistantRootViewContainer(Context context, @Nullable AttributeSet attrs) {
         super(context, attrs);
@@ -53,6 +54,10 @@ public class AssistantRootViewContainer
         invalidate();
     }
 
+    public void disableTalkbackViewResizing() {
+        mTalkbackResizingDisabled = true;
+    }
+
     void destroy() {
         mBrowserControlsStateProvider.removeObserver(this);
     }
@@ -67,7 +72,7 @@ public class AssistantRootViewContainer
 
         int targetHeight;
         int mode;
-        if (ChromeAccessibilityUtil.get().isAccessibilityEnabled()) {
+        if (ChromeAccessibilityUtil.get().isAccessibilityEnabled() && !mTalkbackResizingDisabled) {
             // TODO(b/143944870): Make this more stable with landscape mode.
             targetHeight = (int) (availableHeight * mTalkbackSheetSizeFraction);
             mode = MeasureSpec.EXACTLY;

chrome/android/features/autofill_assistant/java/src/org/chromium/chrome/browser/autofill_assistant/trigger_scripts/AssistantTriggerScript.java

@@ -142,6 +142,7 @@ public class AssistantTriggerScript {
         AssistantRootViewContainer rootViewContainer =
                 (AssistantRootViewContainer) LayoutUtils.createInflater(mContext).inflate(
                         R.layout.autofill_assistant_bottom_sheet_content, /* root= */ null);
+        rootViewContainer.disableTalkbackViewResizing();
         ScrollView scrollableContent = rootViewContainer.findViewById(R.id.scrollable_content);
         rootViewContainer.addView(mHeaderCoordinator.getView(), 0);
         rootViewContainer.addView(mChipsContainer,