Null check ContentViewCore::GetJavaObject

content/public/browser/android/content_view_core.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_BROWSER_ANDROID_CONTENT_VIEW_CORE_H_
 #define CONTENT_PUBLIC_BROWSER_ANDROID_CONTENT_VIEW_CORE_H_
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
@@ skipping 27 matching lines @@
 // Native side of the ContentViewCore.java, which is the primary way of
 // communicating with the native Chromium code on Android.  This is a
 // public interface used by native code outside of the content module.
 class CONTENT_EXPORT ContentViewCore {
  public:
   // Returns the existing ContentViewCore for |web_contents|, or nullptr.
   static ContentViewCore* FromWebContents(WebContents* web_contents);
   static ContentViewCore* GetNativeContentViewCore(JNIEnv* env, jobject obj);
 
   virtual WebContents* GetWebContents() const = 0;
+
+  // May return null reference.
   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaObject() = 0;
   virtual ui::ViewAndroid* GetViewAndroid() const = 0;
   virtual ui::WindowAndroid* GetWindowAndroid() const = 0;
   virtual const scoped_refptr<cc::Layer>& GetLayer() const = 0;
   virtual void ShowPastePopup(int x, int y) = 0;
 
   // Request a scaled content readback. The result is passed through the
   // callback. The boolean parameter indicates whether the readback was a
   // success or not. The content is passed through the SkBitmap parameter.
   virtual void GetScaledContentBitmap(
@@ skipping 17 matching lines @@
                                 int start_offset,
                                 int end_offset)>& callback) = 0;
 
  protected:
   virtual ~ContentViewCore() {};
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_CONTENT_VIEW_CORE_H_