[fuchsia] Use the with_source variant of fx_logger_log

fx_logger_log_with_source() takes file and line as parameters
and lets the syslog library handle them.

Change-Id: I15b3b7948e8ad48781ac36afa6fa9df2145da5a8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521365
Commit-Queue: Wez <wez@chromium.org>
Reviewed-by: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824898}

base/logging.cc

@@ -799,10 +799,8 @@ LogMessage::~LogMessage() {
       // Temporarily remove the trailing newline from |str_newline|'s C-string
       // representation, since fx_logger will add a newline of its own.
       str_newline.pop_back();
-      std::string message =
-          base::StringPrintf("%s(%d) %s", file_basename_, line_,
-                             str_newline.c_str() + message_start_);
-      fx_logger_log(logger, severity, nullptr, message.data());
+      fx_logger_log_with_source(logger, severity, nullptr, file_, line_,
+                                str_newline.c_str() + message_start_);
       str_newline.push_back('\n');
     }
 #endif  // OS_FUCHSIA

fuchsia/engine/web_engine_integration_logging_test.cc

@@ -184,8 +184,8 @@ TEST_F(WebEngineIntegrationLoggingTest, SetJavaScriptLogLevel_DEBUG) {
   ASSERT_EQ(logged_message_.tags.size(), 1u);
   EXPECT_EQ(logged_message_.tags[0], kWebEngineLogTag);
   EXPECT_EQ(NormalizeConsoleLogMessage(logged_message_.msg),
-            "frame_impl.cc(" + std::string(kNormalizedLineNumber) +
-                ") debug:http://127.0.0.1:" + kNormalizedPortNumber +
+            "[frame_impl.cc(" + std::string(kNormalizedLineNumber) +
+                ")] debug:http://127.0.0.1:" + kNormalizedPortNumber +
                 "/console_logging.html:8 "
                 ": This is a debug() message.");
 }