Reduce size of NetLog JSON dumps by not pretty-printing.

chrome/browser/resources/net_internals/log_util.js

Index: chrome/browser/resources/net_internals/log_util.js
diff --git a/chrome/browser/resources/net_internals/log_util.js b/chrome/browser/resources/net_internals/log_util.js
index 68b1001c14c36e730be73a13b830cd9ce7be3848..5eb3f8b99431dd3982c42ebdffd719bbfa6ebe1a 100644
--- a/chrome/browser/resources/net_internals/log_util.js
+++ b/chrome/browser/resources/net_internals/log_util.js
@@ -71,7 +71,7 @@ log_util = (function() {
         getTabData_(),
         numericDate,
         privacyStripping);
-    return JSON.stringify(logDump, null, ' ');
+    return JSON.stringify(logDump);
   }
 
   /**
@@ -88,7 +88,7 @@ log_util = (function() {
         getTabData_(),
         timeutil.getCurrentTime(),
         privacyStripping);
-    callback(JSON.stringify(logDump, null, ' '));
+    callback(JSON.stringify(logDump));
   }
 
   /**