Componentize TopSites, TopSitesBackend, TopSitesDatabase

chrome/browser/ui/webui/ntp/favicon_webui_handler.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/webui/ntp/favicon_webui_handler.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_icon_manager.h"
 #include "chrome/browser/favicon/favicon_service.h"
 #include "chrome/browser/favicon/favicon_service_factory.h"
-#include "chrome/browser/history/top_sites.h"
+#include "chrome/browser/history/top_sites_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/url_constants.h"
+#include "components/history/core/browser/top_sites.h"
 #include "content/public/browser/web_ui.h"
 #include "extensions/browser/extension_registry.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/color_analysis.h"
 #include "ui/gfx/favicon_size.h"
 
 namespace {
 
@@ skipping 60 matching lines @@
 
   std::string dom_id;
   CHECK(args->GetString(1, &dom_id));
 
   FaviconService* favicon_service = FaviconServiceFactory::GetForProfile(
       Profile::FromWebUI(web_ui()), ServiceAccessType::EXPLICIT_ACCESS);
   if (!favicon_service || path.empty())
     return;
 
   GURL url(path);
-  // Intercept requests for prepopulated pages.
-  for (size_t i = 0; i < history::kPrepopulatedPagesCount; i++) {
-    if (url.spec() ==
-        l10n_util::GetStringUTF8(history::kPrepopulatedPages[i].url_id)) {
-      base::StringValue dom_id_value(dom_id);
-      scoped_ptr<base::StringValue> color(
-          SkColorToCss(history::kPrepopulatedPages[i].color));
-      web_ui()->CallJavascriptFunction("ntp.setFaviconDominantColor",
-                                       dom_id_value, *color);
-      return;
+  // Intercept requests for prepopulated pages if TopSites exists.
+  scoped_refptr<history::TopSites> top_sites =
+      TopSitesFactory::GetForProfile(Profile::FromWebUI(web_ui()));
+  if (top_sites) {
+    for (const auto& prepopulated_page : top_sites->GetPrepopulatedPages()) {
+      if (url == prepopulated_page.most_visited.url) {
+        base::StringValue dom_id_value(dom_id);
+        scoped_ptr<base::StringValue> color(
+            SkColorToCss(prepopulated_page.color));
+        web_ui()->CallJavascriptFunction("ntp.setFaviconDominantColor",
+                                         dom_id_value, *color);
+        return;
+      }
     }
   }
 
   dom_id_map_[id_] = dom_id;
   favicon_service->GetRawFaviconForPageURL(
       url,
       favicon_base::FAVICON,
       gfx::kFaviconSize,
       base::Bind(&FaviconWebUIHandler::OnFaviconDataAvailable,
                  base::Unretained(this),
@@ skipping 39 matching lines @@
   if (!gfx::PNGCodec::EncodeBGRASkBitmap(bitmap, true, &bits))
     return;
   scoped_refptr<base::RefCountedStaticMemory> bits_mem(
       new base::RefCountedStaticMemory(&bits.front(), bits.size()));
   scoped_ptr<base::StringValue> color_value(
       GetDominantColorCssString(bits_mem));
   base::StringValue id(extension_id);
   web_ui()->CallJavascriptFunction(
       "ntp.setFaviconDominantColor", id, *color_value);
 }