Fix stuck state when long press on a button is performed.

android_webview/java/src/org/chromium/android_webview/AwContents.java

Index: android_webview/java/src/org/chromium/android_webview/AwContents.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwContents.java b/android_webview/java/src/org/chromium/android_webview/AwContents.java
index 631d5ed27b689f950284c2e324918e315c897b9b..cb91c77ae25656cf4af7011f34777fc99a0883c5 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwContents.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwContents.java
@@ -180,6 +180,7 @@ public class AwContents {
     private Callable<Picture> mPictureListenerContentProvider;
 
     private boolean mContainerViewFocused;
+    private boolean mWindowFocused;
 
     private AwAutofillManagerDelegate mAwAutofillManagerDelegate;
 
@@ -593,9 +594,11 @@ public class AwContents {
         final boolean wasWindowVisible = mIsWindowVisible;
         final boolean wasPaused = mIsPaused;
         final boolean wasFocused = mContainerViewFocused;
+        final boolean wasWindowFocused = mWindowFocused;
 
         // Properly clean up existing mContentViewCore and mNativeAwContents.
         if (wasFocused) onFocusChanged(false, 0, null);
+        if (wasWindowFocused) onWindowFocusChanged(false);
         if (wasViewVisible) setViewVisibilityInternal(false);
         if (wasWindowVisible) setWindowVisibilityInternal(false);
         if (!wasPaused) onPause();
@@ -611,6 +614,7 @@ public class AwContents {
         onSizeChanged(mContainerView.getWidth(), mContainerView.getHeight(), 0, 0);
         if (wasWindowVisible) setWindowVisibilityInternal(true);
         if (wasViewVisible) setViewVisibilityInternal(true);
+        if (wasWindowFocused) onWindowFocusChanged(wasWindowFocused);
         if (wasFocused) onFocusChanged(true, 0, null);
     }
 
@@ -1486,7 +1490,8 @@ public class AwContents {
      * @see android.view.View#onWindowFocusChanged()
      */
     public void onWindowFocusChanged(boolean hasWindowFocus) {
-        // If adding any code here, remember to adding correct handling in receivePopupContents().
+        mWindowFocused = hasWindowFocus;
+        mContentViewCore.onWindowFocusChanged(hasWindowFocus);
     }
 
     /**