NFC: Enforce good formatting across multiple clang-tools-extra files

This patch improves readability of multiple files in clang-tools-extra
and enforces LLVM Coding Guidelines.

Reviewed by: ioeric

Differential Revision: https://reviews.llvm.org/D50707

llvm-svn: 339687
diff --git a/clang-tools-extra/clangd/CodeComplete.cpp b/clang-tools-extra/clangd/CodeComplete.cpp
index 72e395f..f603d1a 100644
--- a/clang-tools-extra/clangd/CodeComplete.cpp
+++ b/clang-tools-extra/clangd/CodeComplete.cpp
@@ -1,11 +1,11 @@
-//===--- CodeComplete.cpp ---------------------------------------*- C++-*-===//
+//===--- CodeComplete.cpp ----------------------------------------*- C++-*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
 //
 // Code completion has several moving parts:
 //  - AST-based completions are provided using the completion hooks in Sema.
@@ -16,7 +16,7 @@
 // Signature help works in a similar way as code completion, but it is simpler:
 // it's purely AST-based, and there are few candidates.
 //
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
 
 #include "CodeComplete.h"
 #include "AST.h"