Give request-to-act badges a grey background, and increase spacing to make it fit.

chrome/browser/extensions/extension_action_util.cc

+// 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 "chrome/browser/extensions/extension_action_util.h"
+
+#include "chrome/browser/themes/theme_service.h"
+#include "chrome/common/extensions/extension_action.h"
+#include "third_party/skia/include/core/SkPaint.h"
+#include "third_party/skia/include/effects/SkGradientShader.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/color_utils.h"
+#include "ui/gfx/rect.h"
+
+namespace extensions {
+
+void PaintExtensionActionBackground(const ExtensionAction& action,
+                                    int tab_id,
+                                    gfx::Canvas* canvas,
+                                    const gfx::Rect& bounds,
+                                    SkColor text_color,
+                                    SkColor background_color) {
+  if (action.WantsAttention(tab_id)) {
+    SkPoint gradient_bounds[2] = { {SkIntToScalar(bounds.x()),
+                                    SkIntToScalar(bounds.y())},
+                                   {SkIntToScalar(bounds.x()),
+                                    SkIntToScalar(bounds.bottom())} };
+    SkColor gradient_colors[2] = {
+        color_utils::AlphaBlend(text_color, background_color, 0x13),
+        color_utils::AlphaBlend(text_color, background_color, 0x1d)
+    };
+    SkShader* gradient = SkGradientShader::CreateLinear(
+        gradient_bounds, gradient_colors, NULL, 2, SkShader::kClamp_TileMode);
+    SkPaint paint;
+    paint.setShader(gradient);
+    gradient->unref();
+    canvas->DrawRect(bounds, paint);
+
+    SkColor border_color =
+        color_utils::AlphaBlend(text_color, background_color, 0x55);
+    canvas->DrawLine(gfx::Point(bounds.x(), bounds.y()),
+                     gfx::Point(bounds.x(), bounds.bottom()),
+                     border_color);
+    // "-1" because gfx::Rects are half-open, not including their right or
+    // bottom edges.
+    canvas->DrawLine(gfx::Point(bounds.right() - 1, bounds.y()),
+                     gfx::Point(bounds.right() - 1, bounds.bottom()),
+                     border_color);
+  }
+}
+
+}  // namespace extensions