Implemented the reporting of text style and language information on Windows.

content/browser/accessibility/browser_accessibility_cocoa.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.
 
 #include <execinfo.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #import "content/browser/accessibility/browser_accessibility_cocoa.h"
 
@@ skipping 1488 matching lines @@
   } else if ([role isEqualToString:NSAccessibilityProgressIndicatorRole] ||
              [role isEqualToString:NSAccessibilitySliderRole] ||
              [role isEqualToString:NSAccessibilityIncrementorRole] ||
              [role isEqualToString:NSAccessibilityScrollBarRole]) {
     float floatValue;
     if (browserAccessibility_->GetFloatAttribute(
             ui::AX_ATTR_VALUE_FOR_RANGE, &floatValue)) {
       return [NSNumber numberWithFloat:floatValue];
     }
   } else if ([role isEqualToString:NSAccessibilityColorWellRole]) {
-    int color = browserAccessibility_->GetIntAttribute(
-        ui::AX_ATTR_COLOR_VALUE);
-    int red = (color >> 16) & 0xFF;
-    int green = (color >> 8) & 0xFF;
-    int blue = color & 0xFF;
+    unsigned int color = static_cast<unsigned int>(
+        browserAccessibility_->GetIntAttribute(ui::AX_ATTR_COLOR_VALUE));
+    unsigned int red, green, blue, alpha;
+    BrowserAccessibility::RGBAToColorValues(color, &red, &green, &blue, &alpha);
     // This string matches the one returned by a native Mac color well.
     return [NSString stringWithFormat:@"rgb %7.5f %7.5f %7.5f 1",
                 red / 255., green / 255., blue / 255.];
   }
 
   return base::SysUTF16ToNSString(browserAccessibility_->GetValue());
 }
 
 - (NSString*)valueDescription {
   if (browserAccessibility_)
@@ skipping 802 matching lines @@
   if (!browserAccessibility_)
     return [super hash];
   return browserAccessibility_->GetId();
 }
 
 - (BOOL)accessibilityShouldUseUniqueId {
   return YES;
 }
 
 @end