Add spaceport benchmark to Chrome Remote Control.

chrome/test/data/third_party/spaceport/js/tests/sprites.js

 define([ 'sprites/sources', 'sprites/transformers', 'sprites/renderers', 'util/ensureCallback', 'util/chainAsync', 'util/benchAsync' ], function (sources, transformers, renderers, ensureCallback, chainAsync, benchAsync) {
     var FRAME_COUNT = 100;
     var TARGET_FRAMERATE = 30;
 
     function frameGenerator(transformer, frameCount) {
         // objectIndex => frameIndex => transform
         var objectDatas = [ ];
     
         return function generateFrames(objectCount) {
             // Generate frame data for new objects, if necessary
@@ skipping 150 matching lines @@
             }
 
             var frames = generateFrames(objectCount);
 
             runTest(sourceData, frames, renderer, function testDone(err, results) {
                 if (err) return callback(err);
                 fpsResults[objectCount] = results;
                 rawData.push([ objectCount, results ]);
                 
                 var timePerObjectEstimate = 1/(objectCount*results.fps);
-                var estimatedMaxObjects = Math.floor(1/(targetFramerate * timePerObjectEstimate));
+                var estimatedMaxObjects = Math.min(5000, Math.floor(1/(targetFramerate * timePerObjectEstimate)));
                 
                 var nextObjectCount = nextNumberToTry(fpsResults, estimatedMaxObjects);
                 test(nextObjectCount);
             });
         }
 
         test(10);
     }
 
     // source => renderer => transformer => test
@@ skipping 19 matching lines @@
                         if (err) return callback(err);
                         runTestToFramerate(TARGET_FRAMERATE, sourceData, transformer, renderer, callback);
                     });
                 };
             });
         });
     });
 
     return tests;
 });