Track text selection on the browser side (Mac)

content/browser/renderer_host/text_input_manager.h

 // Copyright 2016 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_BROWSER_RENDERER_HOST_TEXT_INPUT_MANAGER_H__
 #define CONTENT_BROWSER_RENDERER_HOST_TEXT_INPUT_MANAGER_H__
 
 #include <unordered_map>
 #include <utility>
 
@@ skipping 50 matching lines @@
         TextInputManager* text_input_manager,
         RenderWidgetHostViewBase* updated_view) {}
   };
 
   // This struct is used to store text selection related information for views.
   struct TextSelection {
     TextSelection();
     TextSelection(const TextSelection& other);
     ~TextSelection();
 
+    // If text selection is valid, |text| will be populated with the selected
+    // text and the method will return true. Otherwise, it will return false.
+    bool GetSelectedText(base::string16* text) const;
+
     // The offset of the text stored in |text| relative to the start of the web
     // page.
     size_t offset;
 
     // The current selection range relative to the start of the web page.
     gfx::Range range;
 
     // The text inside and around the current selection range.
     base::string16 text;
   };
@@ skipping 134 matching lines @@
   ViewMap<CompositionRangeInfo> composition_range_info_map_;
   ViewMap<TextSelection> text_selection_map_;
 
   base::ObserverList<Observer> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(TextInputManager);
 };
 }
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_TEXT_INPUT_MANAGER_H__