Font Settings Extension API: Add functions to clear prefs.

chrome/common/extensions/api/experimental.fontSettings.json

 // 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.
 
 [
   {
     "namespace": "experimental.fontSettings",
     "types": [
       {
         "id": "FontName",
@@ skipping 28 matching lines @@
       },
       {
         "id": "LevelOfControl",
         "description": "One of<br><var>not_controllable</var>: cannot be controlled by any extension<br><var>controlled_by_other_extensions</var>: controlled by extensions with higher precedence<br><var>controllable_by_this_extension</var>: can be controlled by this extension<br><var>controlled_by_this_extension</var>: controlled by this extension",
         "type": "string",
         "enum": ["not_controllable", "controlled_by_other_extensions", "controllable_by_this_extension", "controlled_by_this_extension"]
       }
     ],
     "functions": [
       {
-        "name": "getFont",
-        "description": "Gets the current font setting for a given script and generic font family.",
+        "name": "clearFont",
+        "description": "Clears the font set by this extension, if any.",
         "parameters": [
           {
             "name": "details",
+            "type": "object",
+            "properties": {
+              "script": {
+                "$ref": "ScriptCode",
+                "description": "The script for which the font should be cleared. If omitted, the global script font setting is cleared.",
+                "optional": true
+              },
+              "genericFamily": {
+                "$ref": "GenericFamily",
+                "description": "The generic font family for which the font should be cleared."
+              }
+            }
+          },
+          {
+            "type": "function",
+            "name": "callback",
+            "optional": true,
+            "parameters": []
+          }
+        ]
+      },
+      {
+        "name": "getFont",
+        "description": "Gets the font for a given script and generic font family.",
+        "parameters": [
+          {
+            "name": "details",
             "type": "object",
             "properties": {
               "script": {
                 "$ref": "ScriptCode",
-                "description": "The script for which the font setting should be retrieved. If omitted, the global script font setting is retrieved.",
+                "description": "The script for which the font should be retrieved. If omitted, the font for the global script is retrieved.",
                 "optional": true
               },
               "genericFamily": {
                 "$ref": "GenericFamily",
-                "description": "The generic font family for which the font setting should be retrieved."
+                "description": "The generic font family for which the font should be retrieved."
               }
             }
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "parameters": [
               {
                 "name": "details",
                 "type": "object",
                 "properties": {
                   "fontName": {
                     "type": "string",
                     "description": "The font name. Rather than the literal font name preference value, this may be the name of the font that the system resolves the preference value to. The empty string signifies fallback to the global script font setting."
                   }
                 }
               }
             ]
           }
         ]
       },
       {
         "name": "setFont",
-        "description": "Sets the font setting for a given script and generic font family.",
+        "description": "Sets the font for a given script and generic font family.",
         "parameters": [
           {
             "name": "details",
             "type": "object",
             "properties": {
               "script": {
                 "$ref": "ScriptCode",
-                "description": "The script code which the font setting should be set. If omitted, the global script font setting is set.",
+                "description": "The script code which the font should be set. If omitted, the font for the global script is set.",
                 "optional": true
               },
               "genericFamily": {
                 "$ref": "GenericFamily",
-                "description": "The generic font family for which the font setting should be set."
+                "description": "The generic font family for which the font should be set."
               },
               "fontName": {
                 "type": "string",
                 "description": "The font name. If a script is specified, the empty string means to fallback to the global script font setting."
               }
             }
           },
           {
             "type": "function",
             "name": "callback",
@@ skipping 13 matching lines @@
               {
                 "name": "results",
                 "type": "array",
                 "items": { "$ref": "FontName" }
               }
             ]
           }
         ]
       },
       {
+        "name": "clearDefaultFontSize",
+        "description": "Clears the default font size set by this extension, if any.",
+        "parameters": [
+          {
+            "name": "details",
+            "type": "object",
+            "optional": true,
+            "description": "This parameter is currently unused."
+          },
+          {
+            "type": "function",
+            "name": "callback",
+            "optional": true,
+            "parameters": []
+          }
+        ]
+      },
+      {
         "name": "getDefaultFontSize",
         "description": "Gets the default font size.",
         "parameters": [
           {
             "name": "details",
             "type": "object",
             "optional": true,
             "description": "This parameter is currently unused."
           },
           {
@@ skipping 31 matching lines @@
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "parameters": []
           }
         ]
       },
       {
+        "name": "clearDefaultFixedFontSize",
+        "description": "Clears the default fixed font size set by this extension, if any.",
+        "parameters": [
+          {
+            "name": "details",
+            "type": "object",
+            "optional": true,
+            "description": "This parameter is currently unused."
+          },
+          {
+            "type": "function",
+            "name": "callback",
+            "optional": true,
+            "parameters": []
+          }
+        ]
+      },
+      {
         "name": "getDefaultFixedFontSize",
         "description": "Gets the default size for fixed width fonts.",
         "parameters": [
           {
             "name": "details",
             "type": "object",
             "optional": true,
             "description": "This parameter is currently unused."
           },
           {
@@ skipping 31 matching lines @@
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "parameters": []
           }
         ]
       },
       {
+        "name": "clearMinimumFontSize",
+        "description": "Clears the minimum font size set by this extension, if any.",
+        "parameters": [
+          {
+            "name": "details",
+            "type": "object",
+            "optional": true,
+            "description": "This parameter is currently unused."
+          },
+          {
+            "type": "function",
+            "name": "callback",
+            "optional": true,
+            "parameters": []
+          }
+        ]
+      },
+      {
         "name": "getMinimumFontSize",
         "description": "Gets the minimum font size.",
         "parameters": [
           {
             "name": "details",
             "type": "object",
             "optional": true,
             "description": "This parameter is currently unused."
           },
           {
@@ skipping 31 matching lines @@
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "parameters": []
           }
         ]
       },
       {
+        "name": "clearDefaultCharacterSet",
+        "description": "Clears the default character set set by this extension, if any.",
+        "parameters": [
+          {
+            "name": "details",
+            "type": "object",
+            "optional": true,
+            "description": "This parameter is currently unused."
+          },
+          {
+            "type": "function",
+            "name": "callback",
+            "optional": true,
+            "parameters": []
+          }
+        ]
+      },
+      {
         "name": "getDefaultCharacterSet",
         "description": "Gets the default character set.",
         "parameters": [
           {
             "name": "details",
             "type": "object",
             "optional": true,
             "description": "This parameter is currently unused."
           },
           {
@@ skipping 141 matching lines @@
                 "$ref": "LevelOfControl",
                 "description": "The level of control this extension has over the setting."
               }
             }
           }
         ]
       }
     ]
   }
 ]