[Android] Upstream Modal Dialogs functionality

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>
 
 class GURL;
 
 namespace content {
 
 class WebContents;
 
 // 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.
 //
 // TODO(jrg): this is a shell.  Upstream the rest.
-//
-// TODO(jrg): downstream, this class derives from
-// base::SupportsWeakPtr<ContentViewCore>.  Issues raised in
-// http://codereview.chromium.org/10536066/ make us want to rethink
-// ownership issues.
-// FOR THE MERGE (downstream), re-add derivation from
-// base::SupportsWeakPtr<ContentViewCore> to keep everything else working
-// until this issue is resolved.
-// http://b/6666045
 class ContentViewCore {
  public:
   virtual void Destroy(JNIEnv* env, jobject obj) = 0;
 
   static ContentViewCore* Create(JNIEnv* env, jobject obj,
                                  WebContents* web_contents);
   static ContentViewCore* GetNativeContentViewCore(JNIEnv* env, jobject obj);
 
+  // Convenience methods for retrieving the ContentViewCore associated with a
+  // WebContents.  Can return NULL.
+  static ContentViewCore* FromWebContents(content::WebContents* web_contents);
+
+  virtual base::android::ScopedJavaLocalRef<jobject> GetJavaObject() = 0;
+
+  // Offer handling of a JS dialog to the content view client. Returns false
+  // if the client will handle the dialog, or true if we should use the
+  // default handling - i.e. popping up a dialog box.
+  virtual bool ShouldUseNativeJsModalDialog(
+      content::JavaScriptMessageType type,
+      bool is_before_unload_dialog,
+      const string16& message,
+      const string16& default_value,
+      jobject js_result) = 0;
  protected:
   virtual ~ContentViewCore() {};
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_VIEW_CORE_H_