Implement double/triple click functionality in views textfield.

views/controls/textfield/native_textfield_views.h

Index: views/controls/textfield/native_textfield_views.h
diff --git a/views/controls/textfield/native_textfield_views.h b/views/controls/textfield/native_textfield_views.h
index 0344c853077ec06875883b895a025a2eeae59246..2010f60621ca15f50f6c0ff62c6f0108020c656f 100644
--- a/views/controls/textfield/native_textfield_views.h
+++ b/views/controls/textfield/native_textfield_views.h
@@ -14,6 +14,10 @@
 #include "views/controls/textfield/native_textfield_wrapper.h"
 #include "views/view.h"
 
+namespace base {
+class Time;
+}
+
 namespace gfx {
 class Canvas;
 }  // namespace
@@ -159,6 +163,10 @@ class NativeTextfieldViews : public views::View,
   // Find a cusor position for given |point| in this views coordinates.
   size_t FindCursorPosition(const gfx::Point& point) const;
 
+  // Double or tripple click handler. Returns true if a double/triple click is
+  // detected and handled.
+  bool DetectAndHandleDoubleAndTripleClick(const views::MouseEvent& e);
+
   // Utility function to inform the parent textfield (and its controller if any)
   // that the text in the textfield has changed.
   void PropagateTextChange();
@@ -190,6 +198,12 @@ class NativeTextfieldViews : public views::View,
   // A runnable method factory for callback to update the cursor.
   ScopedRunnableMethodFactory<NativeTextfieldViews> cursor_timer_;
 
+  // Time of last mouse press. Used for tracking double/triple click.
+  base::Time last_mouse_press_time_;
+
+  // True if a double click has occured and we are waiting for a triple click.
+  bool tracking_triple_click_;
+
   // Context menu and its content list for the textfield.
   scoped_ptr<ui::SimpleMenuModel> context_menu_contents_;
   scoped_ptr<Menu2> context_menu_menu_;