Android WebView: Blink Page visibility API tests.

Android WebView's view visibility will no longer affect page visibility.
Update the test to reflect that.

BUG=

Review URL: https://codereview.chromium.org/1493873003

Cr-Commit-Position: refs/heads/master@{#362873}

2 files changed, 29 insertions, 0 deletions

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 ca80b7e..ebebc65 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwContents.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwContents.java
@@ -2408,6 +2408,18 @@ public class AwContents implements SmartClipProvider,
     }
 
     /**
+     * Returns true if the page is visible according to DOM page visibility API.
+     * See http://www.w3.org/TR/page-visibility/
+     * This method is only called by tests and will return the supposed CVC
+     * visibility without waiting a pending mUpdateVisibilityRunnable to run.
+     */
+    @VisibleForTesting
+    public boolean isPageVisible() {
+        if (isDestroyed(NO_WARN)) return mIsContentViewCoreVisible;
+        return nativeIsVisible(mNativeAwContents);
+    }
+
+    /**
      * Key for opaque state in bundle. Note this is only public for tests.
      */
     public static final String SAVE_RESTORE_STATE_KEY = "WEBVIEW_CHROMIUM_STATE";
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsRenderTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsRenderTest.java
index 0b17619..a1a6c07 100644
--- a/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsRenderTest.java
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsRenderTest.java
@@ -120,10 +120,27 @@ public class AwContentsRenderTest extends AwTestBase {
         final int width = mAwContents.getContentWidthCss();
         final int height = mAwContents.getContentHeightCss();
         visibleBitmap = GraphicsTestUtils.drawAwContentsOnUiThread(mAwContents, width, height);
+
+        // Things that affect DOM page visibility:
+        // 1. isPaused
+        // 2. window's visibility, if the webview is attached to a window.
+        // Note android.view.View's visibility does not affect DOM page visibility.
         runTestOnUiThread(new Runnable() {
             @Override
             public void run() {
                 mContainerView.setVisibility(View.INVISIBLE);
+                assertTrue(mAwContents.isPageVisible());
+
+                mAwContents.onPause();
+                assertFalse(mAwContents.isPageVisible());
+
+                mAwContents.onResume();
+                assertTrue(mAwContents.isPageVisible());
+
+                // Simulate a window visiblity change. WebView test app can't
+                // manipulate the window visibility directly.
+                mAwContents.onWindowVisibilityChanged(View.INVISIBLE);
+                assertFalse(mAwContents.isPageVisible());
             }
         });