Add an interface to gather text surrounding the selection.

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"
 #include "base/callback.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/android/text_surroundings_delegate.h"
 #include "content/public/browser/navigation_controller.h"
 #include "ui/gfx/rect.h"
 
 class SkBitmap;
 
 namespace cc {
 class Layer;
 }
 
 namespace gfx {
@@ skipping 38 matching lines @@
   virtual float GetDpiScale() const = 0;
   virtual void PauseVideo() = 0;
   virtual void PauseOrResumeGeolocation(bool should_pause) = 0;
 
   // Observer callback for frame metadata updates.
   typedef base::Callback<void(
       const gfx::SizeF& content_size,
       const gfx::Vector2dF& scroll_offset,
       float page_scale_factor)> UpdateFrameInfoCallback;
 
+  // Text surrounding selection.
+  typedef base::Callback<void(const base::string16& content,
+                              int start_offset,
+                              int end_offset)>
+      TextSurroundingSelectionCallback;
+  virtual void RequestTextSurroundingSelection(
+      int max_length,
+      const TextSurroundingSelectionCallback& callback) = 0;
+
  protected:
   virtual ~ContentViewCore() {};
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_CONTENT_VIEW_CORE_H_