Add file association for .webp to Chrome.

chrome/installer/util/shell_util.h

Index: chrome/installer/util/shell_util.h
diff --git a/chrome/installer/util/shell_util.h b/chrome/installer/util/shell_util.h
index bfdb9b953ecfeec05bd2c918e40e8096246a7b16..eb5ce0c7ff213578cf3b025ac04e3f4aa5b366d4 100644
--- a/chrome/installer/util/shell_util.h
+++ b/chrome/installer/util/shell_util.h
@@ -234,8 +234,13 @@ class ShellUtil {
   // Registry path that stores url associations on Vista.
   static const wchar_t* kRegVistaUrlPrefs;
 
-  // File extensions that Chrome registers itself for.
-  static const wchar_t* kFileAssociations[];
+  // File extensions that Chrome registers itself as the default handler
+  // for when the user makes Chrome the default browser.
+  static const wchar_t* kDefaultFileAssociations[];
+
+  // File extensions that Chrome registers itself as being capable of
+  // handling.
+  static const wchar_t* kPotentialFileAssociations[];
 
   // Protocols that Chrome registers itself as the default handler for
   // when the user makes Chrome the default browser.