[Icons NTP] Working prototype to fetch, store, and display big icons.

chrome/renderer/searchbox/searchbox.cc

Index: chrome/renderer/searchbox/searchbox.cc
diff --git a/chrome/renderer/searchbox/searchbox.cc b/chrome/renderer/searchbox/searchbox.cc
index 9adce8536714bf97658937ee385048a46db5c780..a810e80238e9098c16532466f1bde01c786b44df 100644
--- a/chrome/renderer/searchbox/searchbox.cc
+++ b/chrome/renderer/searchbox/searchbox.cc
@@ -10,6 +10,8 @@
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/common/favicon/big_icon_url_parser.h"
+#include "chrome/common/favicon/fallback_icon_url_parser.h"
 #include "chrome/common/favicon/favicon_url_parser.h"
 #include "chrome/common/omnibox_focus_state.h"
 #include "chrome/common/render_messages.h"
@@ -115,6 +117,57 @@ bool GetRestrictedIDFromFaviconUrl(int render_view_id,
   return true;
 }
 
+bool GetRestrictedIDFromBigIconUrl(int render_view_id,
+                                   const GURL& url,
+                                   std::string* favicon_params,
+                                   InstantRestrictedID* rid) {
+  // Strip leading slash.
+  std::string raw_path = url.path();
+  DCHECK_GT(raw_path.length(), (size_t) 0);
+  DCHECK_EQ(raw_path[0], '/');
+  raw_path = raw_path.substr(1);
+
+  chrome::BigIconUrlParser parser;
+  if (!parser.Parse(raw_path))
+    return false;
+
+  *favicon_params = raw_path.substr(0, parser.path_index());
+
+  std::string id_part = raw_path.substr(parser.path_index());
+  InstantRestrictedID id;
+  if (!GetInstantRestrictedIDFromPath(render_view_id, id_part, &id))
+    return true;
+
+  *rid = id;
+  return true;
+}
+
+bool GetRestrictedIDFromFallbackIconUrl(int render_view_id,
+                                        const GURL& url,
+                                        std::string* favicon_params,
+                                        InstantRestrictedID* rid) {
+  // Strip leading slash.
+  std::string raw_path = url.path();
+  DCHECK_GT(raw_path.length(), (size_t) 0);
+  DCHECK_EQ(raw_path[0], '/');
+  raw_path = raw_path.substr(1);
+
+  chrome::ParsedFallbackIconPath parser;
+  if (!parser.Parse(raw_path))
+    return false;
+
+  *favicon_params = raw_path.substr(0, parser.path_index());
+
+  std::string id_part = raw_path.substr(parser.path_index());
+  InstantRestrictedID id;
+  if (!GetInstantRestrictedIDFromPath(render_view_id, id_part, &id))
+    return true;
+
+  *rid = id;
+  return true;
+}
+
+
 // Parses a thumbnail |url| and fills in |id| with the InstantRestrictedID
 // obtained from the |url|. |render_view_id| is the ID of the associated
 // RenderView.
@@ -210,6 +263,47 @@ bool SearchBox::GenerateFaviconURLFromTransientURL(const GURL& transient_url,
   return true;
 }
 
+bool SearchBox::GenerateBigIconURLFromTransientURL(const GURL& transient_url,
+                                                   GURL* url) const {
+  std::string favicon_params;
+  InstantRestrictedID rid = -1;
+  bool success = internal::GetRestrictedIDFromBigIconUrl(
+      render_view()->GetRoutingID(), transient_url, &favicon_params, &rid);
+  if (!success)
+    return false;
+
+  InstantMostVisitedItem item;
+  std::string item_url;
+  if (rid != -1 && GetMostVisitedItemWithID(rid, &item))
+    item_url = item.url.spec();
+
+  *url = GURL(base::StringPrintf("chrome-search://big-icon/%s%s",
+                                 favicon_params.c_str(),
+                                 item_url.c_str()));
+  return true;
+}
+
+bool SearchBox::GenerateFallbackIconURLFromTransientURL(
+    const GURL& transient_url,
+    GURL* url) const {
+  std::string favicon_params;
+  InstantRestrictedID rid = -1;
+  bool success = internal::GetRestrictedIDFromFallbackIconUrl(
+      render_view()->GetRoutingID(), transient_url, &favicon_params, &rid);
+  if (!success)
+    return false;
+
+  InstantMostVisitedItem item;
+  std::string item_url;
+  if (rid != -1 && GetMostVisitedItemWithID(rid, &item))
+    item_url = item.url.spec();
+
+  *url = GURL(base::StringPrintf("chrome-search://fallback-icon/%s%s",
+                                 favicon_params.c_str(),
+                                 item_url.c_str()));
+  return true;
+}
+
 bool SearchBox::GenerateThumbnailURLFromTransientURL(const GURL& transient_url,
                                                      GURL* url) const {
   InstantRestrictedID rid = 0;