[AppList] Add a Suggestions Provider to applist.

chrome/browser/ui/app_list/search/suggestions/suggestions_search_provider.h

Index: chrome/browser/ui/app_list/search/suggestions/suggestions_search_provider.h
diff --git a/chrome/browser/ui/app_list/search/suggestions/suggestions_search_provider.h b/chrome/browser/ui/app_list/search/suggestions/suggestions_search_provider.h
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index 0000000000000000000000000000000000000000..af935ed4ac0fc18412f465f3961b1826b1c37150
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+++ b/chrome/browser/ui/app_list/search/suggestions/suggestions_search_provider.h
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+// Copyright 2014 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 CHROME_BROWSER_UI_APP_LIST_SEARCH_SUGGESTIONS_SUGGESTIONS_SEARCH_PROVIDER_H_
+#define CHROME_BROWSER_UI_APP_LIST_SEARCH_SUGGESTIONS_SUGGESTIONS_SEARCH_PROVIDER_H_
+
+#include "base/basictypes.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "ui/app_list/search_provider.h"
+
+class AppListControllerDelegate;
+class Profile;
+
+namespace suggestions {
+class SuggestionsProfile;
+class SuggestionsService;
+}  // namespace suggestions
+
+namespace app_list {
+
+class SuggestionsSearchProvider : public SearchProvider {
+ public:
+  SuggestionsSearchProvider(Profile* profile,
+                            AppListControllerDelegate* list_controller);
+  ~SuggestionsSearchProvider() override;
+
+  // SearchProvider overrides:
+  void Start(const base::string16& query) override;
+  void Stop() override;
+
+ private:
+  // Called when suggestions are available from the SuggestionsService.
+  void OnSuggestionsProfileAvailable(
+      const suggestions::SuggestionsProfile& suggestions_profile);
+
+  Profile* profile_;
+  AppListControllerDelegate* list_controller_;
+  suggestions::SuggestionsService* suggestions_service_;
+
+  // For callbacks may be run after destruction.
+  base::WeakPtrFactory<SuggestionsSearchProvider> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(SuggestionsSearchProvider);
+};
+
+}  // namespace app_list
+
+#endif  // CHROME_BROWSER_UI_APP_LIST_SEARCH_SUGGESTIONS_SUGGESTIONS_SEARCH_PROVIDER_H_