Add policies to control the disk cache size.

chrome/browser/prefs/command_line_pref_store.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_PREFS_COMMAND_LINE_PREF_STORE_H_
 #define CHROME_BROWSER_PREFS_COMMAND_LINE_PREF_STORE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
@@ skipping 12 matching lines @@
   // Logs a message and returns false if the proxy switches are
   // self-contradictory. Protected so it can be used in unit testing.
   bool ValidateProxySwitches();
 
  private:
   struct StringSwitchToPreferenceMapEntry {
     const char* switch_name;
     const char* preference_path;
   };
 
+  struct IntegerSwitchToPreferenceMapEntry {
+    const char* switch_name;
+    const char* preference_path;
+  };
+
   // |set_value| indicates what the preference should be set to if the switch
   // is present.
   struct BooleanSwitchToPreferenceMapEntry {
     const char* switch_name;
     const char* preference_path;
     bool set_value;
   };
-  static const BooleanSwitchToPreferenceMapEntry boolean_switch_map_[];
 
   // Using the string and boolean maps, apply command-line switches to their
   // corresponding preferences in this pref store.
   void ApplySimpleSwitches();
 
   // Determines the proxy mode preference from the given proxy switches.
   void ApplyProxyMode();
 
   // Apply the SSL/TLS preferences from the given switches.
   void ApplySSLSwitches();
 
   // Weak reference.
   const CommandLine* command_line_;
 
+  // Mappings of command line switches to prefs.
+  static const BooleanSwitchToPreferenceMapEntry boolean_switch_map_[];
   static const StringSwitchToPreferenceMapEntry string_switch_map_[];
+  static const IntegerSwitchToPreferenceMapEntry integer_switch_map_[];
 
   DISALLOW_COPY_AND_ASSIGN(CommandLinePrefStore);
 };
 
 #endif  // CHROME_BROWSER_PREFS_COMMAND_LINE_PREF_STORE_H_