autocomplete: Add AutocompleteProvider::Type enum.

chrome/browser/autocomplete/shortcuts_provider.cc

 // Copyright (c) 2012 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/autocomplete/shortcuts_provider.h"
 
 #include <algorithm>
 #include <cmath>
 #include <map>
 #include <vector>
@@ skipping 32 matching lines @@
  private:
   // Lifetime of the object is less than the lifetime of passed |urls|, so
   // it is safe to store reference.
   const std::set<GURL>& urls_;
 };
 
 }  // namespace
 
 ShortcutsProvider::ShortcutsProvider(AutocompleteProviderListener* listener,
                                      Profile* profile)
-    : AutocompleteProvider(listener, profile, "Shortcuts"),
+    : AutocompleteProvider(listener, profile,
+          AutocompleteProvider::TYPE_SHORTCUTS),
       languages_(profile_->GetPrefs()->GetString(prefs::kAcceptLanguages)),
       initialized_(false) {
   scoped_refptr<history::ShortcutsBackend> backend =
       ShortcutsBackendFactory::GetForProfile(profile_);
   if (backend) {
     backend->AddObserver(this);
     if (backend->initialized())
       initialized_ = true;
   }
 }
@@ skipping 293 matching lines @@
   // (1.0 / each 5 additional hits), up to a maximum of 5x as long.
   const double kMaxDecaySpeedDivisor = 5.0;
   const double kNumUsesPerDecaySpeedDivisorIncrement = 5.0;
   double decay_divisor = std::min(kMaxDecaySpeedDivisor,
       (shortcut.number_of_hits + kNumUsesPerDecaySpeedDivisorIncrement - 1) /
       kNumUsesPerDecaySpeedDivisorIncrement);
 
   return static_cast<int>((base_score / exp(decay_exponent / decay_divisor)) +
       0.5);
 }