Add support for interstitial pages on android.

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 33bb222caa68334ee99e6084136189eb89ca9a06..4ec061cb6281ba9923c0232158e3cf71a2e71a09 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -230,10 +230,17 @@ bool RenderWidgetHostViewAndroid::IsSurfaceAvailableForCopy() const {
 }
 
 void RenderWidgetHostViewAndroid::Show() {
+  if (content_view_core_) {
+    host_->AttachLayer(texture_layer_->layer());
+    is_hidden_ = false;
+  }
+
   texture_layer_->layer()->setDrawsContent(true);
 }
 
 void RenderWidgetHostViewAndroid::Hide() {
+  is_hidden_ = true;
+
   texture_layer_->layer()->setDrawsContent(false);
 }