SuggestionsService blacklist handling.

chrome/browser/search/suggestions/suggestions_service.h

Index: chrome/browser/search/suggestions/suggestions_service.h
diff --git a/chrome/browser/search/suggestions/suggestions_service.h b/chrome/browser/search/suggestions/suggestions_service.h
index 972cfce63ada136e3d84343cdcf43cd140f1c4e4..990a7101e52ca96a755978848ac03c2fecaaf001 100644
--- a/chrome/browser/search/suggestions/suggestions_service.h
+++ b/chrome/browser/search/suggestions/suggestions_service.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SERVICE_H_
 #define CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SERVICE_H_
 
+#include <deque>
+#include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ -23,6 +25,8 @@ namespace suggestions {
 
 extern const char kSuggestionsFieldTrialName[];
 extern const char kSuggestionsFieldTrialURLParam[];
+extern const char kSuggestionsFieldTrialSuggestionsSuffixParam[];
+extern const char kSuggestionsFieldTrialBlacklistSuffixParam[];
 extern const char kSuggestionsFieldTrialStateParam[];
 extern const char kSuggestionsFieldTrialStateEnabled[];
 
@@ -43,6 +47,11 @@ class SuggestionsService : public KeyedService, public net::URLFetcherDelegate {
   // fetch request completes.
   void FetchSuggestionsData(ResponseCallback callback);
 
+  // Issue a blacklist request. If there is already a blacklist request
+  // in-flight, the new blacklist request is ignored.
+  void AddBlacklistedURL(const std::string& candidate_url,
+                         ResponseCallback callback);
+
  private:
   FRIEND_TEST_ALL_PREFIXES(SuggestionsServiceTest, FetchSuggestionsData);
 
@@ -54,6 +63,12 @@ class SuggestionsService : public KeyedService, public net::URLFetcherDelegate {
   // KeyedService implementation.
   virtual void Shutdown() OVERRIDE;
 
+  // Determines whether |request| is a blacklisting request.
+  bool IsBlacklistRequest(net::URLFetcher* request) const;
+
+  // Creates a request to the suggestions service, properly setting headers.
+  net::URLFetcher* CreateSuggestionsRequest(const GURL& url);
+
   // Contains the current suggestions fetch request. Will only have a value
   // while a request is pending, and will be reset by |OnURLFetchComplete|.
   scoped_ptr<net::URLFetcher> pending_request_;
@@ -65,6 +80,9 @@ class SuggestionsService : public KeyedService, public net::URLFetcherDelegate {
   // The URL to fetch suggestions data from.
   GURL suggestions_url_;
 
+  // Prefix for building the blacklisting URL.
+  std::string blacklist_url_prefix_;
+
   // Queue of callbacks. These are flushed when fetch request completes.
   std::vector<ResponseCallback> waiting_requestors_;