Make clicking on side tabs to select them work.

Use a simple round rect for the visual treatment. 
Add some rect conversion utils. 

http://crbug.com/34509 
TEST=none 

Review URL: http://codereview.chromium.org/597012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@38856 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 34 insertions, 0 deletions

diff --git a/app/gfx/skia_util.h b/app/gfx/skia_util.h
new file mode 100644
index 0000000..66a8aeb
--- /dev/null
+++ b/app/gfx/skia_util.h
@@ -0,0 +1,34 @@
+// 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.
+
+#ifndef APP_GFX_SKIA_UTIL_H_
+#define APP_GFX_SKIA_UTIL_H_
+
+#include "third_party/skia/include/core/SkColor.h"
+#include "third_party/skia/include/core/SkRect.h"
+
+class SkShader;
+
+namespace gfx {
+
+class Rect;
+
+// Convert between Skia and gfx rect types.
+SkRect RectToSkRect(const gfx::Rect& rect);
+gfx::Rect SkRectToRect(const SkRect& rect);
+
+// Creates a vertical gradient shader. The caller owns the shader.
+// Example usage to avoid leaks:
+//   paint.setShader(gfx::CreateGradientShader(0, 10, red, blue))->safeUnref();
+//
+// (The old shader in the paint, if any, needs to be freed, and safeUnref will
+// handle the NULL case.)
+SkShader* CreateGradientShader(int start_point,
+                               int end_point,
+                               SkColor start_color,
+                               SkColor end_color);
+
+}  // namespace gfx;
+
+#endif  // APP_GFX_SKIA_UTIL_H_