Add matcher for float literals.

Patch by Chris Gray! Thanks!

llvm-svn: 187232
diff --git a/clang/lib/ASTMatchers/Dynamic/Registry.cpp b/clang/lib/ASTMatchers/Dynamic/Registry.cpp
index ac3241c..e0c7280 100644
--- a/clang/lib/ASTMatchers/Dynamic/Registry.cpp
+++ b/clang/lib/ASTMatchers/Dynamic/Registry.cpp
@@ -252,6 +252,7 @@
   REGISTER_MATCHER(explicitCastExpr);
   REGISTER_MATCHER(expr);
   REGISTER_MATCHER(fieldDecl);
+  REGISTER_MATCHER(floatLiteral);
   REGISTER_MATCHER(forField);
   REGISTER_MATCHER(forRangeStmt);
   REGISTER_MATCHER(forStmt);