Merge pull request #15 from paulirish/multipletabs-frommaster

use last tab if multiple tabs found

bigrig.js

@@ -94,6 +94,8 @@ try {
       strict: argv.strict
     });
   });
+
+  throw e;
 }
 
 function processContents (contents) {

lib/processor.js

@@ -59,6 +59,7 @@ function analyzeTrace (contents, opts) {
 
   for (var p = 0; p < processes.length; p++) {
     var candidate = processes[p];
+
     if (typeof candidate.labels !== 'undefined' &&
         candidate.labels.length > 0 &&
         candidate.labels[0] !== 'chrome://tracing' &&
@@ -82,14 +83,16 @@ function analyzeTrace (contents, opts) {
   }
 
   if (summarizable.length > 1) {
-    throw 'Multiple processes (tabs) found.';
+    var bullet = '\n  * ';
+    var tabs = summarizable.map( pr => pr.labels[0] ).map( l => l.trim() ).join(bullet);
+    console.warn('Multiple processes (tabs) found:' + bullet, tabs);
+    summarizable = summarizable.reverse().filter( p => !!p.labels[0] ).slice(0, 1);
+    console.log('\nProceeding using the last named tab:' + bullet, summarizable[0].labels[0]);
   }
 
   traceProcess = summarizable.pop();
-
   // Reset all the globals we had to define for window etc.
   globalConfig.disable();
-
   return processTrace(model, traceProcess, opts);
 }