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..5abbd25c49a9871e979f14e43182147674c7d6e5 100644
--- a/chrome/installer/util/shell_util.h
+++ b/chrome/installer/util/shell_util.h
@@ -234,9 +234,14 @@ class ShellUtil {
   // Registry path that stores url associations on Vista.
   static const wchar_t* kRegVistaUrlPrefs;
 
-  // File extensions that Chrome registers itself for.
+  // File extensions that Chrome registers itself as the default handler
+  // for when the user makes Chrome the default browser.
   static const wchar_t* kFileAssociations[];
 
+  // 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.
   static const wchar_t* kBrowserProtocolAssociations[];