Implement indeterminate checkbox for the generic theme....

webkit/tools/test_shell/test_shell_webthemecontrol.cc

 // Copyright (c) 2010 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.
 
 // This file implements a simple generic version of the WebKitThemeEngine,
 // which is used to draw all the native controls on a web page. We use this
 // file when running in layout test mode in order to remove any
 // platform-specific rendering differences due to themes, colors, etc.
 //
 
@@ skipping 249 matching lines @@
       roundRect(bg_color_);
       break;
     case kUncheckedBox_Type:
       // Unchecked boxes are simply plain boxes.
       box(irect_, bg_color_);
       break;
     case kCheckedBox_Type:
       nested_boxes(kCheckIndent, kCheckIndent, kCheckIndent, kCheckIndent,
                    bg_color_, fg_color_);
       break;
+    case kIndeterminateCheckBox_Type:
+      // Indeterminate checkbox is a box containing '-'.
+      nested_boxes(kCheckIndent, height_ / 2, kCheckIndent, height_ / 2,
+                   bg_color_, fg_color_);
+      break;
     case kUncheckedRadio_Type:
       circle(SkIntToScalar(half_height), bg_color_);
       break;
     case kCheckedRadio_Type:
       circle(SkIntToScalar(half_height), bg_color_);
       circle(SkIntToScalar(half_height - kCheckIndent), fg_color_);
       break;
     case kHorizontalScrollTrackBack_Type:
       // Draw a box with a notch at the left.
       long_offset = half_height - kNotchLongOffset;
@@ skipping 147 matching lines @@
   paint.setColor(fg_color_);
   paint.setStyle(SkPaint::kFill_Style);
   canvas_->drawIRect(tofill, paint);
 
   markState();
   canvas_->endPlatformPaint();
 }
 
 }  // namespace TestShellWebTheme