Changes favicon database to support storing bitmaps of different sizes for the same icon_url

chrome/browser/history/history_types.cc

Index: chrome/browser/history/history_types.cc
diff --git a/chrome/browser/history/history_types.cc b/chrome/browser/history/history_types.cc
index abe58cb1753bed76c23e983cac8f44f36c1113b5..d1c572855c6783ccc47a081463b88c867ae94ffb 100644
--- a/chrome/browser/history/history_types.cc
+++ b/chrome/browser/history/history_types.cc
@@ -429,6 +429,7 @@ IconMapping::IconMapping()
 
 IconMapping::~IconMapping() {}
 
+// FaviconData ----------------------------------------------------------------
 
 FaviconData::FaviconData()
   : known_icon(false),
@@ -442,4 +443,14 @@ bool FaviconData::is_valid() {
   return known_icon && image_data.get() && image_data->size();
 }
 
+// FaviconBitmap --------------------------------------------------------------
+
+FaviconBitmap::FaviconBitmap()
+    : bitmap_id(0),
+      icon_id(0) {
+}
+
+FaviconBitmap::~FaviconBitmap() {
+}
+
 }  // namespace history