Escapes backslash, colon, comma, equals and semicolon in IAccessible2 string attributes.

content/browser/accessibility/browser_accessibility_win.h

Index: content/browser/accessibility/browser_accessibility_win.h
diff --git a/content/browser/accessibility/browser_accessibility_win.h b/content/browser/accessibility/browser_accessibility_win.h
index fdde33e55d046003cbf6338780e9dbb3858c91a8..2632c4d087094bbe5d4fdce5616114b047d91752 100644
--- a/content/browser/accessibility/browser_accessibility_win.h
+++ b/content/browser/accessibility/browser_accessibility_win.h
@@ -751,6 +751,12 @@ BrowserAccessibilityWin
       ui::AXStringAttribute attribute,
       BSTR* value_bstr);
 
+  // Escapes the following characters with backslash: backslash, colon, comma,

[dmazzoni, 2015/10/12 20:53:50]

Nit: I'd prefer if you didn't list which characters are escaped here in the
header file. If someday in the future somebody changed it, it'd be easy to
forget to change the header file comment. Have this comment just explain that it
escapes the characters necessary according to the IAccessible2 spec. The cc file
can document what characters those are.

+  // equals and semicolon.
+  // It's okay for input to be the same as output.
+  static void SanitizeStringAttributeForIA2(const base::string16& input,
+                                            base::string16* output);
+
   // If the string attribute |attribute| is present, add its value as an
   // IAccessible2 attribute with the name |ia2_attr|.
   void StringAttributeToIA2(ui::AXStringAttribute attribute,