Move ia2_attributes handling to AXPlatformNodeWin.

ui/accessibility/platform/ax_platform_node_win.h

Index: ui/accessibility/platform/ax_platform_node_win.h
diff --git a/ui/accessibility/platform/ax_platform_node_win.h b/ui/accessibility/platform/ax_platform_node_win.h
index a08df798ad6a024939b51ddbc67836def2358ac5..6c2f0cae09c715ed94dff3cf9373e81c2592ee8d 100644
--- a/ui/accessibility/platform/ax_platform_node_win.h
+++ b/ui/accessibility/platform/ax_platform_node_win.h
@@ -425,10 +425,15 @@ class AX_EXPORT __declspec(uuid("26f5641a-246d-457b-a96d-07f3fae6acf2"))
 
   int32_t IA2Role();
 
+  std::vector<base::string16> IA2Attributes();
+
   // AXPlatformNodeBase overrides.
   void Dispose() override;
 
  private:
+  // IAccessible2 attributes.
+  std::vector<base::string16> ia2_attributes_;
+
   int MSAAEvent(ui::AXEvent event);
   bool IsWebAreaForPresentationalIframe();
   bool ShouldNodeHaveReadonlyState(const AXNodeData& data) const;
@@ -438,6 +443,30 @@ class AX_EXPORT __declspec(uuid("26f5641a-246d-457b-a96d-07f3fae6acf2"))
       ui::AXStringAttribute attribute,
       BSTR* value_bstr) const;
 
+  // Escapes characters in string attributes as required by the IA2 Spec.
+  // It's okay for input to be the same as output.
+  static void SanitizeStringAttributeForIA2(const base::string16& input,
+                                            base::string16* output);
+  /*

[dmazzoni, 2017/07/17 08:27:18]

Fix this before landing?

[dougt, 2017/07/17 19:28:27]

Done.

+    FRIEND_TEST_ALL_PREFIXES(BrowserAccessibilityTest,
+                             TestSanitizeStringAttributeForIA2);
+  */
+  // Sets the selection given a start and end offset in IA2 Hypertext.
+  void SetIA2HypertextSelection(LONG start_offset, LONG end_offset);
+
+  // If the string attribute |attribute| is present, add its value as an
+  // IAccessible2 attribute with the name |ia2_attr|.
+  void StringAttributeToIA2(ui::AXStringAttribute attribute,
+                            const char* ia2_attr);
+
+  // If the bool attribute |attribute| is present, add its value as an
+  // IAccessible2 attribute with the name |ia2_attr|.
+  void BoolAttributeToIA2(ui::AXBoolAttribute attribute, const char* ia2_attr);
+
+  // If the int attribute |attribute| is present, add its value as an
+  // IAccessible2 attribute with the name |ia2_attr|.
+  void IntAttributeToIA2(ui::AXIntAttribute attribute, const char* ia2_attr);
+
   void AddAlertTarget();
   void RemoveAlertTarget();