Apply automatic range checks to enum types across IPC.

chrome/common/instant_types.h

 // Copyright 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.
 
 #ifndef CHROME_COMMON_INSTANT_TYPES_H_
 #define CHROME_COMMON_INSTANT_TYPES_H_
 
 #include <string>
 #include <utility>
 
@@ skipping 20 matching lines @@
   std::string metadata;
 };
 
 // The alignment of the theme background image.
 enum ThemeBackgroundImageAlignment {
   THEME_BKGRND_IMAGE_ALIGN_CENTER,
   THEME_BKGRND_IMAGE_ALIGN_LEFT,
   THEME_BKGRND_IMAGE_ALIGN_TOP,
   THEME_BKGRND_IMAGE_ALIGN_RIGHT,
   THEME_BKGRND_IMAGE_ALIGN_BOTTOM,
+
+  THEME_BKGRND_IMAGE_ALIGN_LAST = THEME_BKGRND_IMAGE_ALIGN_BOTTOM,
 };
 
 // The tiling of the theme background image.
 enum ThemeBackgroundImageTiling {
   THEME_BKGRND_IMAGE_NO_REPEAT,
   THEME_BKGRND_IMAGE_REPEAT_X,
   THEME_BKGRND_IMAGE_REPEAT_Y,
   THEME_BKGRND_IMAGE_REPEAT,
+
+  THEME_BKGRND_IMAGE_LAST = THEME_BKGRND_IMAGE_REPEAT,
 };
 
 // The RGBA color components for the text and links of the theme.
 struct RGBAColor {
   RGBAColor();
   ~RGBAColor();
 
   bool operator==(const RGBAColor& rhs) const;
 
   // The color in RGBA format where the R, G, B and A values
@@ skipping 102 matching lines @@
 
   // The optional assisted query stats, aka AQS, used for logging purposes.
   // This string contains impressions of all autocomplete matches shown
   // at the query submission time.  For privacy reasons, we require the
   // search provider to support HTTPS protocol in order to receive the AQS
   // param.
   // For more details, see http://goto.google.com/binary-clients-logging.
   base::string16 assisted_query_stats;
 };
 #endif  // CHROME_COMMON_INSTANT_TYPES_H_