Fix broken official Windows build due to r583324.

TBR=tommycli@chromium.org
NOTRY=true
NOTREECHECKS=true

Change-Id: Ib8a3268f5eefc51491ae49ef2c942c0dcb6b7a8f
Reviewed-on: https://chromium-review.googlesource.com/1176192Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583332}

chrome/common/chrome_content_client_constants.cc

@@ -6,7 +6,7 @@
 
 #if defined(GOOGLE_CHROME_BUILD)
 const base::FilePath::CharType ChromeContentClient::kNotPresent[] =
-    "internal-not-yet-present";
+    FILE_PATH_LITERAL("internal-not-yet-present");
 #endif
 
 #if BUILDFLAG(ENABLE_NACL)