WebView: choose loud vs. quiet interstitial

android_webview/java/src/org/chromium/android_webview/AwContents.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.android_webview;
 
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.Activity;
 import android.content.ComponentCallbacks2;
@@ skipping 2899 matching lines @@
                 (float) Math.hypot(velocityX, velocityY));
 
         if (mOverScrollGlow.isAnimating()) {
             postInvalidateOnAnimation();
         }
     }
 
     /**
      * Determine if at least one edge of the WebView extends over the edge of the window.
      */
+    @CalledByNative
     private boolean extendsOutOfWindow() {
         int loc[] = new int[2];
         mContainerView.getLocationOnScreen(loc);
         int x = loc[0];
         int y = loc[1];
         mContainerView.getRootView().getLocationOnScreen(loc);
         int rootX = loc[0];
         int rootY = loc[1];
 
         // Get the position of the current view, relative to its root view
         int relativeX = x - rootX;
         int relativeY = y - rootY;
 
         if (relativeX < 0 || relativeY < 0
                 || relativeX + mContainerView.getWidth() > mContainerView.getRootView().getWidth()
                 || relativeY + mContainerView.getHeight()
                         > mContainerView.getRootView().getHeight()) {
             return true;
         }
         return false;
     }
 
     /**
      * Determine if it's reasonable to show any sort of interstitial. If the WebView is not visible,
      * the user may not be able to interact with the UI.
      * @return true if the WebView is visible
      */
     @VisibleForTesting
+    @CalledByNative
     protected boolean canShowInterstitial() {
         return mIsAttachedToWindow && mIsViewVisible;
     }
 
     /**
      * Determine if it's suitable to show the interstitial for browsers and main UIs. If the WebView
      * is close to full-screen, we assume the app is using it as the main UI, so we show the same
      * interstital Chrome uses. Otherwise, we assume the WebView is part of a larger composed page,
      * and will show a different interstitial.
      * @return true if the WebView should display the large interstitial
@@ skipping 561 matching lines @@
     private native void nativeTrimMemory(long nativeAwContents, int level, boolean visible);
 
     private native void nativeCreatePdfExporter(long nativeAwContents, AwPdfExporter awPdfExporter);
 
     private native void nativePreauthorizePermission(long nativeAwContents, String origin,
             long resources);
 
     private native void nativeGrantFileSchemeAccesstoChildProcess(long nativeAwContents);
     private native void nativeResumeLoadingCreatedPopupWebContents(long nativeAwContents);
 }