Add javatests for the WebView SafeBrowsing feature

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 7b125061062a1f63d5dbe42201fecd435078d1a4..b27c76630aae629c300b3a24b895fbe50a42193f 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
@@ -10,6 +10,7 @@ import android.view.View;
 
 import org.chromium.android_webview.AwContents;
 import org.chromium.android_webview.test.AwTestBase;
+import org.chromium.android_webview.test.AwTestContainerView;
 import org.chromium.base.ThreadUtils;
 
 import java.util.concurrent.Callable;
@@ -78,6 +79,19 @@ public class GraphicsTestUtils {
         });
     }
 
+    // Gets the pixel color at the center of AwContents.
+    public static int getPixelColorAtCenterOfView(
+            final AwContents awContents, final AwTestContainerView testContainerView) {
+        return ThreadUtils.runOnUiThreadBlockingNoException(new Callable<Integer>() {
+            @Override
+            public Integer call() {
+                return drawAwContents(awContents, 2, 2, -(float) testContainerView.getWidth() / 2,
+                        -(float) testContainerView.getHeight() / 2)
+                        .getPixel(0, 0);
+            }
+        });
+    }
+
     public static void pollForBackgroundColor(final AwContents awContents, final int c)
             throws Throwable {
         AwTestBase.pollInstrumentationThread(new Callable<Boolean>() {