MacViews: Use bullets for displaying obscured text.

ui/gfx/render_text.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 UI_GFX_RENDER_TEXT_H_
 #define UI_GFX_RENDER_TEXT_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 191 matching lines @@
                        SkPaint* paint);
 
 }  // namespace internal
 
 // RenderText represents an abstract model of styled text and its corresponding
 // visual layout. Support is built in for a cursor, a selection, simple styling,
 // complex scripts, and bi-directional text. Implementations provide mechanisms
 // for rendering and translation between logical and visual data.
 class GFX_EXPORT RenderText {
  public:
+// The character used for displaying obscured text.
+// TODO(benrg): GTK uses the first of U+25CF, U+2022, U+2731, U+273A, '*'
+// that's available in the font (find_invisible_char() in gtkentry.c).
+// Use a bullet character on Mac.
+#if defined(OS_MACOSX)
+  static constexpr base::char16 kPasswordReplacementChar = 0x2022;
+#else
+  static constexpr base::char16 kPasswordReplacementChar = '*';
+#endif
+
   virtual ~RenderText();
 
   // Creates a platform-specific or cross-platform RenderText instance.
   static RenderText* CreateInstance();
   static RenderText* CreateInstanceForEditing();
 
   // Creates another instance of the same concrete class.
   virtual std::unique_ptr<RenderText> CreateInstanceOfSameType() const = 0;
 
   // Like above but copies all style settings too.
@@ skipping 620 matching lines @@
   // Lines computed by EnsureLayout. These should be invalidated upon
   // OnLayoutTextAttributeChanged and OnDisplayTextAttributeChanged calls.
   std::vector<internal::Line> lines_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderText);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RENDER_TEXT_H_