Factor out ContentViewAndroidDelegate

ui/android/view_android.h

Index: ui/android/view_android.h
diff --git a/ui/android/view_android.h b/ui/android/view_android.h
index 32c2c719bba1572ddbe2b443d0d01f024a46805e..ed6ad12fe2ab8504902b7313a13d64fed34921d3 100644
--- a/ui/android/view_android.h
+++ b/ui/android/view_android.h
@@ -7,6 +7,7 @@
 
 #include "base/android/scoped_java_ref.h"
 #include "ui/android/ui_android_export.h"
+#include "ui/gfx/geometry/rect_f.h"
 
 namespace ui {
 
@@ -21,6 +22,9 @@ class UI_ANDROID_EXPORT ViewAndroid {
   virtual base::android::ScopedJavaLocalRef<jobject>
       GetViewAndroidDelegate() const = 0 ;
 
+  virtual base::android::ScopedJavaLocalRef<jobject>
+      AcquireAnchorView(const gfx::RectF& bounds) = 0;
+
  protected:
   virtual ~ViewAndroid() {}
 };