[WebView] Tests for visual state during fullscreen transitions.

android_webview/javatests/src/org/chromium/android_webview/test/util/GraphicsTestUtils.java

Index: android_webview/javatests/src/org/chromium/android_webview/test/util/GraphicsTestUtils.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/util/GraphicsTestUtils.java b/android_webview/javatests/src/org/chromium/android_webview/test/util/GraphicsTestUtils.java
index acce0fe26130a2fe6ca7f19dc0ba433bb7c90c7d..d41b7a389706540fecd56db7f8fd38f4184134ff 100644
--- a/android_webview/javatests/src/org/chromium/android_webview/test/util/GraphicsTestUtils.java
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/util/GraphicsTestUtils.java
@@ -6,6 +6,7 @@ package org.chromium.android_webview.test.util;
 
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
+import android.view.View;
 
 import org.chromium.android_webview.AwContents;
 import org.chromium.android_webview.test.AwTestBase;
@@ -43,6 +44,20 @@ public class GraphicsTestUtils {
         return doDrawAwContents(awContents, width, height, dx, dy);
     }
 
+    /**
+     * Draws the supplied {@link View} into the returned {@link Bitmap}.
+     *
+     * @param view The view to draw
+     * @param width The width of the bitmap
+     * @param height The height of the bitmap
+     */
+    public static Bitmap drawView(View view, int width, int height) {
+        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        view.draw(canvas);
+        return bitmap;
+    }
+
     public static int sampleBackgroundColorOnUiThread(final AwContents awContents)
             throws Exception {
         return ThreadUtils.runOnUiThreadBlocking(new Callable<Integer>() {