Switch to sending IME selection updates early.

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
index 88785c177e4d7083df2badb0f07f756141072d1b..78ffa8c594be459cf217dcc2a06465f9f11c18f5 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
@@ -2421,11 +2421,10 @@ import java.util.Map;
         getContentViewClient().onGeometryChanged(-1, null);
     }
 
-    @SuppressWarnings("unused")
     @CalledByNative
     private void updateImeAdapter(int nativeImeAdapterAndroid, int textInputType,
             String text, int selectionStart, int selectionEnd,
-            int compositionStart, int compositionEnd, boolean showImeIfNeeded) {
+            int compositionStart, int compositionEnd, boolean showImeIfNeeded, boolean requireAck) {
         TraceEvent.begin();
         mSelectionEditable = (textInputType != ImeAdapter.getTextInputTypeNone());
 
@@ -2436,20 +2435,13 @@ import java.util.Map;
 
         if (mInputConnection != null) {
             mInputConnection.setEditableText(text, selectionStart, selectionEnd,
-                    compositionStart, compositionEnd);
+                    compositionStart, compositionEnd, requireAck);
         }
         TraceEvent.end();
     }
 
     @SuppressWarnings("unused")
     @CalledByNative
-    private void processImeBatchStateAck(boolean isBegin) {
-        if (mInputConnection == null) return;
-        mInputConnection.setIgnoreTextInputStateUpdates(isBegin);
-    }
-
-    @SuppressWarnings("unused")
-    @CalledByNative
     private void setTitle(String title) {
         getContentViewClient().onUpdateTitle(title);
     }
@@ -2949,6 +2941,7 @@ import java.util.Map;
 
             if (mAccessibilityScriptInjectionObserver == null) {
                 ContentObserver contentObserver = new ContentObserver(new Handler()) {
+                    @Override
                     public void onChange(boolean selfChange, Uri uri) {
                         setAccessibilityState(mAccessibilityManager.isEnabled());
                     }