Add initial GTK web accessibility framework (new with valgrind fix).

content/browser/accessibility/browser_accessibility_mac_unittest.mm

 // 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "content/browser/accessibility/browser_accessibility_cocoa.h"
+#include "content/browser/accessibility/browser_accessibility_mac.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #import "testing/gtest_mac.h"
 #import "ui/base/test/ui_cocoa_test_helper.h"
 
 @interface MockAccessibilityDelegate :
     NSView<BrowserAccessibilityDelegateCocoa>
 
 - (NSPoint)accessibilityPointInScreen:(BrowserAccessibilityCocoa*)accessibility;
 - (void)doDefaultAction:(int32)accessibilityObjectId;
@@ skipping 49 matching lines @@
     child2.location.set_width(250);
     child2.location.set_height(100);
     child2.role = WebAccessibility::ROLE_HEADING;
 
     root.children.push_back(child1);
     root.children.push_back(child2);
 
     delegate_.reset([[MockAccessibilityDelegate alloc] init]);
     manager_.reset(
         BrowserAccessibilityManager::Create(delegate_, root, NULL));
-    accessibility_.reset([manager_->GetRoot()->toBrowserAccessibilityCocoa()
-        retain]);
+    accessibility_.reset([manager_->GetRoot()->ToBrowserAccessibilityMac()->
+        native_view() retain]);
   }
 
  protected:
   scoped_nsobject<MockAccessibilityDelegate> delegate_;
   scoped_nsobject<BrowserAccessibilityCocoa> accessibility_;
   scoped_ptr<BrowserAccessibilityManager> manager_;
 };
 
 // Standard hit test.
 TEST_F(BrowserAccessibilityTest, HitTestTest) {
@@ skipping 26 matching lines @@
       accessibilityAttributeValue:NSAccessibilityHelpAttribute];
   EXPECT_NSEQ(@"HelpText", helpText);
 }
 
 // Test querying for an invalid attribute to ensure it doesn't crash.
 TEST_F(BrowserAccessibilityTest, InvalidAttributeTest) {
   NSString* shouldBeNil = [accessibility_
       accessibilityAttributeValue:@"NSAnInvalidAttribute"];
   EXPECT_TRUE(shouldBeNil == nil);
 }