IWYU fixes for url/...

url/url_util.cc

Index: url/url_util.cc
diff --git a/url/url_util.cc b/url/url_util.cc
index cbb252f47132ff91643fba35dbcf338f13d8e160..b68d46da8af4392926ddfcd66fbd1360f2f2b648 100644
--- a/url/url_util.cc
+++ b/url/url_util.cc
@@ -6,14 +6,18 @@
 
 #include <stddef.h>
 #include <string.h>
+#include <ostream>
 #include <vector>
 
 #include "base/debug/leak_annotations.h"
 #include "base/logging.h"
+#include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
+#include "url/third_party/mozilla/url_parse.h"
 #include "url/url_canon_internal.h"
+#include "url/url_constants.h"
 #include "url/url_file.h"
-#include "url/url_util_internal.h"
+#include "url/url_parse_internal.h"

[Łukasz Anforowicz, 2016/01/07 00:16:17]

I am not sure if we care about why-comments that IWYU can generate, but omits by
default.  I assume that absence of comments is better, because it is more
consistent with the rest of Chromium style.

Example of why-comments-from-IWYU:

#include <stddef.h>                             // for NULL, size_t
#include <string.h>                             // for memcpy, strlen
#include <debug/vector>                         // for vector
#include <ostream>                              // for operator<<
#include "base/debug/leak_annotations.h"        // for ANNOTATE_LEAKING_OBJE...
#include "base/logging.h"                       // for COMPACT_GOOGLE_LOG_DC...
#include "base/strings/string_piece.h"          // for StringPiece, StringPi...
#include "base/strings/string_util.h"           // for LowerCaseEqualsASCII
#include "url/third_party/mozilla/url_parse.h"  // for Component, Parsed
#include "url/url_canon_internal.h"             // for AppendEscapedChar
#include "url/url_constants.h"                  // for kFileScheme, kFileSys...
#include "url/url_file.h"
#include "url/url_parse_internal.h"             // for CountConsecutiveSlashes 

 
 namespace url {