First pass at removal of unneeded dependencies on skia\ext\platform_canvas.h

webkit/tools/test_shell/test_shell_webthemecontrol.h

 // 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.
 
 // TestShellWebTheme::Control implements the generic rendering of controls
 // needed by TestShellWebTheme::Engine. See the comments in that class
 // header file for why this class is needed and used.
 //
 // This class implements a generic set of widgets using Skia. The widgets
 // are optimized for testability, not a pleasing appearance.
 //
 
 #ifndef WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBTHEMECONTROL_H_
 #define WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBTHEMECONTROL_H_
 
 #include "base/basictypes.h"
-#include "skia/ext/platform_canvas.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkRect.h"
 
+class SkCanvas;
+
 namespace TestShellWebTheme {
 
 class Control {
  public:
   // This list of states mostly mirrors the list in
   // third_party/WebKit/WebCore/platform/ThemeTypes.h but is maintained
   // separately since that isn't public and also to minimize dependencies.
   // Note that the WebKit ThemeTypes seem to imply that a control can be
   // in multiple states simultaneously but WebThemeEngine only allows for
   // a single state at a time.
@@ skipping 137 matching lines @@
   const int bottom_;
   const int width_;
   const int height_;
 
   DISALLOW_COPY_AND_ASSIGN(Control);
 };
 
 }  // namespace TestShellWebTheme
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBTHEMECONTROL_H_
-