Add support for UIA accessibility interfaces like IAccessibleEx and IRawElementProviderSimple.

content/browser/accessibility/browser_accessibility_win.h

Index: content/browser/accessibility/browser_accessibility_win.h
===================================================================
--- content/browser/accessibility/browser_accessibility_win.h	(revision 130412)
+++ content/browser/accessibility/browser_accessibility_win.h	(working copy)
@@ -10,6 +10,7 @@
 #include <atlcom.h>
 #include <oleacc.h>
 
+#include <UIAutomationCore.h>

[dmazzoni, 2012/04/04 06:02:00]

Nit: Group this with the other Windows includes, above - rather than with STL
includes

[ananta, 2012/04/04 19:23:00]

Done.

 #include <vector>
 
 #include "content/browser/accessibility/browser_accessibility.h"
@@ -54,7 +55,9 @@
       public IServiceProvider,
       public ISimpleDOMDocument,
       public ISimpleDOMNode,
-      public ISimpleDOMText {
+      public ISimpleDOMText,
+      public IAccessibleEx,
+      public IRawElementProviderSimple {
  public:
   BEGIN_COM_MAP(BrowserAccessibilityWin)
     COM_INTERFACE_ENTRY2(IDispatch, IAccessible2)
@@ -72,6 +75,8 @@
     COM_INTERFACE_ENTRY(ISimpleDOMDocument)
     COM_INTERFACE_ENTRY(ISimpleDOMNode)
     COM_INTERFACE_ENTRY(ISimpleDOMText)
+    COM_INTERFACE_ENTRY(IAccessibleEx)
+    COM_INTERFACE_ENTRY(IRawElementProviderSimple)
   END_COM_MAP()
 
   // Represents a non-static text node in IAccessibleHypertext. This character
@@ -92,7 +97,7 @@
   // BrowserAccessibility methods.
   //
   CONTENT_EXPORT virtual void PreInitialize();
-CONTENT_EXPORT virtual void PostInitialize();
+  CONTENT_EXPORT virtual void PostInitialize();
   CONTENT_EXPORT virtual void NativeAddReference();
   CONTENT_EXPORT virtual void NativeReleaseReference();
 
@@ -692,6 +697,44 @@
   CONTENT_EXPORT STDMETHODIMP QueryService(REFGUID guidService, REFIID riid,
       void** object);
 
+  // IAccessibleEx methods not implemented.

[dmazzoni, 2012/04/04 06:02:00]

Nit: Use a large comment block to be consistent:

//
// IAccessibleEx methods not implemented.
//

[ananta, 2012/04/04 19:23:00]

Done.

+  CONTENT_EXPORT STDMETHODIMP GetObjectForChild(long child_id,
+                                                IAccessibleEx** ret) {
+    return E_NOTIMPL;
+  }
+
+  CONTENT_EXPORT STDMETHODIMP GetIAccessiblePair(IAccessible** acc,
+                                                 long* child_id) {
+    return E_NOTIMPL;
+  }
+
+  CONTENT_EXPORT STDMETHODIMP GetRuntimeId(SAFEARRAY** runtime_id) {
+    return E_NOTIMPL;
+  }
+
+  CONTENT_EXPORT STDMETHODIMP ConvertReturnedElement(
+      IRawElementProviderSimple* element,
+      IAccessibleEx** acc) {
+    return E_NOTIMPL;
+  }
+
+  // IRawElementProviderSimple methods.

[dmazzoni, 2012/04/04 06:02:00]

Same

[ananta, 2012/04/04 19:23:00]

Done.

+  // The GetPatternProvider/GetPropertyValue methods need to be implemented for
+  // the on screen keyboard to show up in Windows 8 metro.

[dmazzoni, 2012/04/04 06:02:00]

Nit: on screen -> on-screen.

[ananta, 2012/04/04 19:23:00]

Done.

+  CONTENT_EXPORT STDMETHOD(GetPatternProvider)(PATTERNID id,
+                                               IUnknown** provider);
+  CONTENT_EXPORT STDMETHOD(GetPropertyValue)(PROPERTYID id, VARIANT* ret);

[dmazzoni, 2012/04/04 06:02:00]

Does it work if you use STDMETHODIMP GetPropertyValue(...) rather than
STDMETHOD(GetPropertyValue)(...) to be consistent?

[ananta, 2012/04/04 19:23:00]

Done.

+
+  // IRawElementProviderSimple methods not implemented.
+  CONTENT_EXPORT STDMETHOD(get_ProviderOptions)(enum ProviderOptions* ret) {
+    return E_NOTIMPL;
+  }
+
+  CONTENT_EXPORT STDMETHOD(get_HostRawElementProvider)(
+      IRawElementProviderSimple** provider) {
+    return E_NOTIMPL;
+  }
+
   //
   // CComObjectRootEx methods.
   //