Simplify test file used by testBlinkPerfTracingMetricsForMeasureFrameTime & enable it on Android

third_party/WebKit/PerformanceTests/TestData/color-changes-measure-frame-time.html

Index: third_party/WebKit/PerformanceTests/TestData/color-changes-measure-frame-time.html
diff --git a/third_party/WebKit/PerformanceTests/TestData/color-changes-measure-frame-time.html b/third_party/WebKit/PerformanceTests/TestData/color-changes-measure-frame-time.html
index a55b2475db72996c102005be71c7593bcee80150..d1c7ee33dc2c69a8ffbe448eb80af1a20f57f7b8 100644
--- a/third_party/WebKit/PerformanceTests/TestData/color-changes-measure-frame-time.html
+++ b/third_party/WebKit/PerformanceTests/TestData/color-changes-measure-frame-time.html
@@ -25,7 +25,7 @@ function buildTree(parent, depth, arity, tagNameCallback, createElementCallback)
 
 // Build a tall tree that is skinny. A middle layer of
 // the tree should have the changeColor class.
-buildTree(document.body, 15, 2,
+buildTree(document.body, 5, 5,
   function(depth) {
     // Use divs at upper levels to avoid too much layout time.
     return depth > 9 ? 'div' : 'span';
@@ -37,20 +37,6 @@ buildTree(document.body, 15, 2,
   }
 );
 
-// Build a short tree that is fat. A middle layer of
-// the tree should have the changeColor class.
-buildTree(document.body, 6, 7,
-  function(depth) {
-    // Use divs at upper levels to avoid too much layout time.
-    return depth > 4 ? 'div' : 'span';
-  },
-  function(element, depth) {
-    element.style.backgroundColor = 'orange';
-    if (depth == 3)
-      element.setAttribute('class', 'changeColor');
-  }
-);
-
 var runCount = 0;
 var elementsToChange = document.getElementsByClassName('changeColor');
 var colors = [