Stop pretty-printing pref JSON

base/prefs/json_pref_store.cc

Index: base/prefs/json_pref_store.cc
diff --git a/base/prefs/json_pref_store.cc b/base/prefs/json_pref_store.cc
index c52a95c9cc2b7b675059cbd6d91574a465633eba..87696c5759e8674f3bd715704ab1bf9c1c63a116 100644
--- a/base/prefs/json_pref_store.cc
+++ b/base/prefs/json_pref_store.cc
@@ -8,12 +8,14 @@
 
 #include "base/bind.h"
 #include "base/callback.h"
+#include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/histogram.h"
+#include "base/prefs/base_prefs_switches.h"
 #include "base/prefs/pref_filter.h"
 #include "base/sequenced_task_runner.h"
 #include "base/strings/string_util.h"
@@ -398,7 +400,9 @@ bool JsonPrefStore::SerializeData(std::string* output) {
     pref_filter_->FilterSerializeData(prefs_.get());
 
   JSONStringValueSerializer serializer(output);
-  serializer.set_pretty_print(true);
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kPrettyPrintPrefs))

[Bernhard Bauer, 2015/03/04 10:07:58]

Add braces around the body if the condition is more complicated than a single
line, for readability.

[hashimoto, 2015/03/04 14:18:40]

Done.

+    serializer.set_pretty_print(true);
   return serializer.Serialize(*prefs_);
 }