Beginnings of the script bubble.

chrome/browser/extensions/script_bubble_controller.cc

Index: chrome/browser/extensions/script_bubble_controller.cc
diff --git a/chrome/browser/extensions/script_bubble_controller.cc b/chrome/browser/extensions/script_bubble_controller.cc
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+// 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/script_bubble_controller.h"
+
+#include "base/string_number_conversions.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/extensions/component_loader.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/extensions/extension_tab_util.h"
+#include "chrome/browser/extensions/location_bar_controller.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_action.h"
+#include "third_party/skia/include/core/SkColor.h"
+
+namespace extensions {
+
+namespace {
+
+const SkColor kBadgeBackgroundColor = 0xEEEEDD00;
+
+}  // namespace
+
+ScriptBubbleController::ScriptBubbleController(TabHelper* tab_helper)
+    : TabHelper::ContentScriptObserver(tab_helper) {
+}
+
+void ScriptBubbleController::OnContentScriptsExecuting(
+      const content::WebContents* web_contents,
+      const ExecutingScriptsMap& extension_ids,
+      int32 page_id,
+      const GURL& on_url) {
+  Profile* profile =
+      Profile::FromBrowserContext(web_contents->GetBrowserContext());
+  ComponentLoader* loader =
+      ExtensionSystem::Get(profile)->extension_service()->component_loader();
+  const Extension* extension = loader->GetScriptBubble();
+  if (!extension)
+    return;
+
+  int tab_id = ExtensionTabUtil::GetTabId(web_contents);
+  ExtensionAction* page_action = extension->page_action();
+
+  page_action->SetAppearance(tab_id, ExtensionAction::ACTIVE);
+  page_action->SetBadgeText(tab_id, base::UintToString(extension_ids.size()));
+  page_action->SetBadgeBackgroundColor(tab_id, kBadgeBackgroundColor);
+
+  tab_helper_->location_bar_controller()->NotifyChange();
+}
+
+}  // namespace extensions