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

chrome/browser/ui/omnibox/location_bar_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/ui/omnibox/location_bar_util.h"
 
 #include "base/i18n/rtl.h"
 #include "base/string_util.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/base/text/text_elider.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/color_utils.h"
+#include "ui/gfx/rect.h"
 
 namespace location_bar_util {
 
 string16 CalculateMinString(const string16& description) {
   // Chop at the first '.' or whitespace.
   const size_t dot_index = description.find('.');
   const size_t ws_index = description.find_first_of(kWhitespaceUTF16);
   size_t chop_index = std::min(dot_index, ws_index);
   string16 min_string;
   if (chop_index == string16::npos) {
     // No dot or whitespace, truncate to at most 3 chars.
     min_string = ui::TruncateString(description, 3);
   } else {
     min_string = description.substr(0, chop_index);
   }
   base::i18n::AdjustStringForLocaleDirection(&min_string);
   return min_string;
 }
 
+
+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))
+    return;
+
+  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(bounds.origin(),
+                   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 location_bar_util