Make ShortcutsBackend a ProfileKeyedService.

chrome/browser/autocomplete/shortcuts_provider.cc

Index: chrome/browser/autocomplete/shortcuts_provider.cc
===================================================================
--- chrome/browser/autocomplete/shortcuts_provider.cc	(revision 144929)
+++ chrome/browser/autocomplete/shortcuts_provider.cc	(working copy)
@@ -22,6 +22,7 @@
 #include "chrome/browser/history/history.h"
 #include "chrome/browser/history/history_notifications.h"
 #include "chrome/browser/history/history_service_factory.h"
+#include "chrome/browser/history/shortcuts_backend_factory.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
@@ -50,11 +51,12 @@
                                      Profile* profile)
     : AutocompleteProvider(listener, profile, "ShortcutsProvider"),
       languages_(profile_->GetPrefs()->GetString(prefs::kAcceptLanguages)),
-      initialized_(false),
-      shortcuts_backend_(profile->GetShortcutsBackend()) {
-  if (shortcuts_backend_.get()) {
-    shortcuts_backend_->AddObserver(this);
-    if (shortcuts_backend_->initialized())
+      initialized_(false) {
+  scoped_refptr<history::ShortcutsBackend> backend =
+      ShortcutsBackendFactory::GetForProfile(profile_);
+  if (backend) {
+    backend->AddObserver(this);
+    if (backend->initialized())
       initialized_ = true;
   }
 }
@@ -109,8 +111,10 @@
 }
 
 ShortcutsProvider::~ShortcutsProvider() {
-  if (shortcuts_backend_.get())
-    shortcuts_backend_->RemoveObserver(this);
+  scoped_refptr<history::ShortcutsBackend> backend =
+      ShortcutsBackendFactory::GetForProfileIfExists(profile_);
+  if (backend)
+    backend->RemoveObserver(this);
 }
 
 void ShortcutsProvider::OnShortcutsLoaded() {
@@ -123,23 +127,29 @@
 }
 
 void ShortcutsProvider::DeleteShortcutsWithURLs(const std::set<GURL>& urls) {
-  if (!shortcuts_backend_.get())
+  scoped_refptr<history::ShortcutsBackend> backend =
+      ShortcutsBackendFactory::GetForProfileIfExists(profile_);
+  if (!backend)
     return;  // We are off the record.
   for (std::set<GURL>::const_iterator url = urls.begin(); url != urls.end();
        ++url)
-    shortcuts_backend_->DeleteShortcutsWithUrl(*url);
+    backend->DeleteShortcutsWithUrl(*url);
 }
 
 void ShortcutsProvider::GetMatches(const AutocompleteInput& input) {
+  scoped_refptr<history::ShortcutsBackend> backend =
+      ShortcutsBackendFactory::GetForProfileIfExists(profile_);
+  if (!backend)
+    return;
   // Get the URLs from the shortcuts database with keys that partially or
   // completely match the search term.
   string16 term_string(base::i18n::ToLower(input.text()));
   DCHECK(!term_string.empty());
 
   for (history::ShortcutsBackend::ShortcutMap::const_iterator it =
-       FindFirstMatch(term_string);
-       it != shortcuts_backend_->shortcuts_map().end() &&
-            StartsWith(it->first, term_string, true); ++it)
+           FindFirstMatch(term_string);
+       it != backend->shortcuts_map().end() &&
+           StartsWith(it->first, term_string, true); ++it)
     matches_.push_back(ShortcutToACMatch(input, term_string, it->second));
   std::partial_sort(matches_.begin(),
       matches_.begin() +
@@ -257,13 +267,17 @@
 
 history::ShortcutsBackend::ShortcutMap::const_iterator
     ShortcutsProvider::FindFirstMatch(const string16& keyword) {
+  scoped_refptr<history::ShortcutsBackend> backend =
+      ShortcutsBackendFactory::GetForProfileIfExists(profile_);
+  if (!backend)
+    backend->shortcuts_map().end();
   history::ShortcutsBackend::ShortcutMap::const_iterator it =
-      shortcuts_backend_->shortcuts_map().lower_bound(keyword);
+      backend->shortcuts_map().lower_bound(keyword);
   // Lower bound not necessarily matches the keyword, check for item pointed by
   // the lower bound iterator to at least start with keyword.
-  return ((it == shortcuts_backend_->shortcuts_map().end()) ||
+  return ((it == backend->shortcuts_map().end()) ||
     StartsWith(it->first, keyword, true)) ? it :
-    shortcuts_backend_->shortcuts_map().end();
+    backend->shortcuts_map().end();
 }
 
 // static
@@ -302,12 +316,3 @@
   return static_cast<int>((base_score / exp(decay_exponent / decay_divisor)) +
       0.5);
 }
-
-void ShortcutsProvider::set_shortcuts_backend(
-    history::ShortcutsBackend* shortcuts_backend) {
-  DCHECK(shortcuts_backend);
-  shortcuts_backend_ = shortcuts_backend;
-  shortcuts_backend_->AddObserver(this);
-  if (shortcuts_backend_->initialized())
-    initialized_ = true;
-}