Make chrome hide keyboard when opening a new window

content/public/android/java/src/org/chromium/content/browser/input/ImeAdapter.java

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.browser.input;
 
 import android.content.res.Configuration;
 import android.os.Build;
 import android.os.ResultReceiver;
 import android.os.SystemClock;
@@ skipping 398 matching lines @@
      * Call this when window's focus has changed.
      * @param gainFocus True if we're gaining focus.
      */
     public void onWindowFocusChanged(boolean gainFocus) {
         if (mInputConnectionFactory != null) {
             mInputConnectionFactory.onWindowFocusChanged(gainFocus);
         }
     }
 
     /**
-     * Call this when view is detached from window
+     * Call this when view is attached to window.
      */
     public void onViewAttachedToWindow() {
         if (mInputConnectionFactory != null) {
             mInputConnectionFactory.onViewAttachedToWindow();
         }
     }
 
     /**
-     * Call this when view is detached from window
+     * Call this when view is detached from window.
      */
     public void onViewDetachedFromWindow() {
         resetAndHideKeyboard();
         if (mInputConnectionFactory != null) {
             mInputConnectionFactory.onViewDetachedFromWindow();
         }
     }
 
     /**
      * Call this when view's focus has changed.
      * @param gainFocus True if we're gaining focus.
+     * @param hideKeyboardIfNeeded True if we should hide soft keyboard when losing focus.

[Changwan Ryu, 2017/02/21 05:16:39]

how about renaming this to hideKeyboardOnBlur?

[yabinh, 2017/02/21 06:18:31]

Done.

      */
-    public void onViewFocusChanged(boolean gainFocus) {
+    public void onViewFocusChanged(boolean gainFocus, boolean hideKeyboardIfNeeded) {
         if (DEBUG_LOGS) Log.w(TAG, "onViewFocusChanged: gainFocus [%b]", gainFocus);
+        if (!gainFocus && hideKeyboardIfNeeded) resetAndHideKeyboard();
         if (mInputConnectionFactory != null) {
             mInputConnectionFactory.onViewFocusChanged(gainFocus);
         }
     }
 
     /**
      * Move cursor to the end of the current selection.
      */
     public void moveCursorToSelectionEnd() {
         if (DEBUG_LOGS) Log.w(TAG, "movecursorToEnd");
@@ skipping 326 matching lines @@
     private native void nativeSetEditableSelectionOffsets(long nativeImeAdapterAndroid,
             int start, int end);
     private native void nativeSetComposingRegion(long nativeImeAdapterAndroid, int start, int end);
     private native void nativeDeleteSurroundingText(long nativeImeAdapterAndroid,
             int before, int after);
     private native void nativeResetImeAdapter(long nativeImeAdapterAndroid);
     private native boolean nativeRequestTextInputStateUpdate(long nativeImeAdapterAndroid);
     private native void nativeRequestCursorUpdate(long nativeImeAdapterAndroid,
             boolean immediateRequest, boolean monitorRequest);
 }