Remove unnecessary base::JSONReader ctor call

The base::JSONReader::Read method is a static method.

Bug: chromium:1070409
Change-Id: I88a4c081c5bf953a8984f2d25bd3de8f26453a21
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/8900
Reviewed-by: Brett Wilson <brettw@chromium.org>
Commit-Queue: Brett Wilson <brettw@chromium.org>

src/gn/analyzer.cc

diff --git a/src/gn/analyzer.cc b/src/gn/analyzer.cc
index 11fb111..b3db365 100644
--- a/src/gn/analyzer.cc
+++ b/src/gn/analyzer.cc
@@ -127,7 +127,7 @@
   std::string error_msg_out;
   int error_line_out;
   int error_column_out;
-  std::unique_ptr<base::Value> value = base::JSONReader().ReadAndReturnError(
+  std::unique_ptr<base::Value> value = base::JSONReader::ReadAndReturnError(
       input, base::JSONParserOptions::JSON_PARSE_RFC, &error_code_out,
       &error_msg_out, &error_line_out, &error_column_out);
   if (!value)