Rename various text zoom related stuff to be more generic, since we now can...

chrome/common/page_zoom.h

 // Copyright (c) 2006-2008 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_COMMON_TEXT_ZOOM_H__
-#define CHROME_COMMON_TEXT_ZOOM_H__
+#ifndef CHROME_COMMON_PAGE_ZOOM_H_
+#define CHROME_COMMON_PAGE_ZOOM_H_
 
-// Used in AlterTextSize IPC call.
-namespace text_zoom {
-  enum TextSize {
-    TEXT_SMALLER  = -1,
-    TEXT_STANDARD = 0,
-    TEXT_LARGER   = 1,
+// This enum is the parameter to various text/page zoom commands so we know
+// what the specific zoom command is.
+class PageZoom {
+ public:
+  enum Function {
+    SMALLER  = -1,
+    STANDARD = 0,
+    LARGER   = 1,
   };
-}
+ 
+ private:
+  PageZoom() {}  // For scoping only.
+};
 
-#endif
+#endif  // CHROME_COMMON_PAGE_ZOOM_H_