base: Remove the string logging from CHECK().

content/browser/webui/web_ui_mojo_browsertest.cc

Index: content/browser/webui/web_ui_mojo_browsertest.cc
diff --git a/content/browser/webui/web_ui_mojo_browsertest.cc b/content/browser/webui/web_ui_mojo_browsertest.cc
index e47d4e70dc20f44c369dd4404883823e88b86d38..332af5d4e5ecd7c73ab127e4af41ca67ecc34f26 100644
--- a/content/browser/webui/web_ui_mojo_browsertest.cc
+++ b/content/browser/webui/web_ui_mojo_browsertest.cc
@@ -59,13 +59,12 @@ bool GetResource(const std::string& id,
 
   std::string contents;
   if (base::EndsWith(id, ".mojom", base::CompareCase::SENSITIVE)) {
-    CHECK(base::ReadFileToString(GetFilePathForJSResource(id), &contents))
-        << id;
+    CHECK(base::ReadFileToString(GetFilePathForJSResource(id), &contents));
   } else {
     base::FilePath path;
     CHECK(base::PathService::Get(content::DIR_TEST_DATA, &path));
     path = path.AppendASCII(id.substr(0, id.find("?")));
-    CHECK(base::ReadFileToString(path, &contents)) << path.value();
+    CHECK(base::ReadFileToString(path, &contents));
   }
 
   base::RefCountedString* ref_contents = new base::RefCountedString;