Fix Android ContentShell's incorrect behavior when opening link with window.open.

content/shell/android/java/src/org/chromium/content_shell/ShellManager.java

Index: content/shell/android/java/src/org/chromium/content_shell/ShellManager.java
diff --git a/content/shell/android/java/src/org/chromium/content_shell/ShellManager.java b/content/shell/android/java/src/org/chromium/content_shell/ShellManager.java
index 91dc4c2ffc111662575776834e628de8cdaef773..4cc09069abd334fbacf06e8d64c1b2d3586f0ff9 100644
--- a/content/shell/android/java/src/org/chromium/content_shell/ShellManager.java
+++ b/content/shell/android/java/src/org/chromium/content_shell/ShellManager.java
@@ -21,6 +21,7 @@ import org.chromium.ui.gfx.NativeWindow;
 @JNINamespace("content")
 public class ShellManager extends FrameLayout {
 
+    private static boolean sStartup = true;
     private NativeWindow mWindow;
     private Shell mActiveShell;
 
@@ -38,7 +39,10 @@ public class ShellManager extends FrameLayout {
         mContentViewRenderView = new ContentViewRenderView(context) {
             @Override
             protected void onReadyToRender() {
-                mActiveShell.loadUrl(mStartupUrl);
+                if (sStartup) {
+                    mActiveShell.loadUrl(mStartupUrl);
+                    sStartup = false;
+                }
             }
         };
     }