Correctly remove WebView from layout before destroying it. throw exception if destroy is called without remove

app/src/main/java/acr/browser/lightning/activity/BrowserActivity.java

@@ -1045,6 +1045,9 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
             closeActivity();
             return;
         } else {
+            if (tabToDelete.getWebView() != null) {
+                mBrowserFrame.removeView(tabToDelete.getWebView());
+            }
             mTabsManager.deleteTab(position);
         }
         final LightningView afterTab = mTabsManager.getCurrentTab();
@@ -1102,6 +1105,10 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
     void closeBrowser() {
         mBrowserFrame.setBackgroundColor(mBackgroundColor);
         performExitCleanUp();
+        LightningView currentTab = mTabsManager.getCurrentTab();
+        if (currentTab != null && currentTab.getWebView() != null) {
+            mBrowserFrame.removeView(currentTab.getWebView());
+        }
         mTabsManager.shutdown();
         mEventBus.post(new BrowserEvents.TabsChanged());
         finish();

app/src/main/java/acr/browser/lightning/view/LightningView.java

@@ -772,8 +772,7 @@ public class LightningView {
             // before calling destroy() so that a memory leak is not created
             ViewGroup parent = (ViewGroup) mWebView.getParent();
             if (parent != null) {
-                Log.e(Constants.TAG, "WebView was not detached from window before onDestroy");
-                parent.removeView(mWebView);
+                throw new RuntimeException("WebView was not detached from window before onDestroy");
             }
             mWebView.stopLoading();
             mWebView.onPause();