Support touch icon in FaviconHelper

chrome/browser/favicon_delegate.cc

+// Copyright (c) 2011 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/favicon_delegate.h"
+
+#include "content/browser/tab_contents/navigation_entry.h"
+#include "content/browser/tab_contents/tab_contents.h"
+#include "ui/gfx/favicon_size.h"
+
+FaviconDelegate::FaviconDelegate(TabContents* tab_contents)
+  : IconDelegate(),
+    tab_contents_(tab_contents) {
+}
+
+FaviconDelegate::~FaviconDelegate() {
+}
+
+void FaviconDelegate::UpdateFaviconImageData(
+    NavigationEntry* entry,
+    const GURL& icon_url,
+    scoped_refptr<RefCountedMemory> data) {
+  if (entry->favicon().is_valid() && icon_url != entry->favicon().url())
+    return;
+  UpdateFaviconImageData(entry, data);
+}
+
+void FaviconDelegate::UpdateFaviconImageData(NavigationEntry* entry,
+                                             const SkBitmap& image) {
+  // No matter what happens, we need to mark the favicon as being set.
+  entry->favicon().set_is_valid(true);
+
+  if (image.empty())
+    return;
+
+  entry->favicon().set_bitmap(image);
+  tab_contents_->NotifyNavigationStateChanged(TabContents::INVALIDATE_TAB);
+}
+
+void FaviconDelegate::UpdateFaviconURL(NavigationEntry* entry,
+                                       const GURL& url) {
+  entry->favicon().set_url(url);
+}
+
+SkBitmap FaviconDelegate::ConvertToFaviconSize(const SkBitmap& image) {
+  int width = image.width();
+  int height = image.height();
+
+  if (width > 0 && width != kFaviconSize && height > 0
+      && height != kFaviconSize) {
+    calc_favicon_target_size(&width, &height);
+    return skia::ImageOperations::Resize(
+          image, skia::ImageOperations::RESIZE_LANCZOS3,
+          width, height);
+  }
+  return image;
+}
+
+int FaviconDelegate::GetIconSize() {
+  return kFaviconSize;
+}