android webview: setShouldReuseGlobalForUnownedMainFrame

android_webview/java/src/org/chromium/android_webview/AwSettings.java

Index: android_webview/java/src/org/chromium/android_webview/AwSettings.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwSettings.java b/android_webview/java/src/org/chromium/android_webview/AwSettings.java
index bf7d2418097da7210e9182e17ced3fa836686451..a7f1afdb548f7774045c11f98f9c3292ebb438e2 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwSettings.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwSettings.java
@@ -96,6 +96,7 @@ public class AwSettings {
     private boolean mAcceptThirdPartyCookies = false;
 
     private final boolean mSupportLegacyQuirks;
+    private final boolean mAllowEmptyDocumentPersistence;
 
     private final boolean mPasswordEchoEnabled;
 
@@ -208,7 +209,8 @@ public class AwSettings {
 
     public AwSettings(Context context,
             boolean isAccessFromFileURLsGrantedByDefault,
-            boolean supportsLegacyQuirks) {
+            boolean supportsLegacyQuirks,
+            boolean allowEmptyDocumentPersistence) {
         boolean hasInternetPermission = context.checkPermission(
                 android.Manifest.permission.INTERNET,
                 Process.myPid(),
@@ -237,6 +239,7 @@ public class AwSettings {
             mTextSizePercent *= context.getResources().getConfiguration().fontScale;
 
             mSupportLegacyQuirks = supportsLegacyQuirks;
+            mAllowEmptyDocumentPersistence = allowEmptyDocumentPersistence;
         }
         // Defer initializing the native side until a native WebContents instance is set.
     }
@@ -1246,6 +1249,12 @@ public class AwSettings {
         return mSupportLegacyQuirks;
     }
 
+    @CalledByNative
+    private boolean getAllowEmptyDocumentPersistenceLocked() {
+        assert Thread.holdsLock(mAwSettingsLock);
+        return mAllowEmptyDocumentPersistence;
+    }
+
     /**
      * See {@link android.webkit.WebSettings#setUseWideViewPort}.
      */