[tracing] Move math utilities from base into their own subdirectory (attempt 2)

tracing/tracing/ui/extras/chrome/cc/layer_tree_quad_stack_view.html

Index: tracing/tracing/ui/extras/chrome/cc/layer_tree_quad_stack_view.html
diff --git a/tracing/tracing/ui/extras/chrome/cc/layer_tree_quad_stack_view.html b/tracing/tracing/ui/extras/chrome/cc/layer_tree_quad_stack_view.html
index a01dd114563bc68309fe782263157af2bb7befe0..c6d8fb82f279b7b484b40403cd040c6ebab6418d 100644
--- a/tracing/tracing/ui/extras/chrome/cc/layer_tree_quad_stack_view.html
+++ b/tracing/tracing/ui/extras/chrome/cc/layer_tree_quad_stack_view.html
@@ -6,9 +6,9 @@ found in the LICENSE file.
 -->
 
 <link rel="import" href="/tracing/base/color.html">
-<link rel="import" href="/tracing/base/quad.html">
+<link rel="import" href="/tracing/base/math/quad.html">
+<link rel="import" href="/tracing/base/math/range.html">
 <link rel="import" href="/tracing/base/raf.html">
-<link rel="import" href="/tracing/base/range.html">
 <link rel="import" href="/tracing/base/unit_scale.html">
 <link rel="import" href="/tracing/extras/chrome/cc/debug_colors.html">
 <link rel="import" href="/tracing/extras/chrome/cc/picture.html">
@@ -423,7 +423,7 @@ tr.exportTo('tr.ui.e.chrome.cc', function() {
 
       var lthi = this.layerTreeImpl_.layerTreeHostImpl;
       var lthiInstance = lthi.objectInstance;
-      var worldViewportRect = tr.b.Rect.fromXYWH(
+      var worldViewportRect = tr.b.math.Rect.fromXYWH(
           0, 0,
           lthi.deviceViewportSize.width, lthi.deviceViewportSize.height);
       this.quadStackView_.deviceRect = worldViewportRect;
@@ -702,7 +702,7 @@ tr.exportTo('tr.ui.e.chrome.cc', function() {
         return;
 
       var rect = layer.animationBoundsRect;
-      var abq = tr.b.Quad.fromRect(rect);
+      var abq = tr.b.math.Quad.fromRect(rect);
 
       abq.backgroundColor = 'rgba(164,191,48,0.5)';
       abq.borderColor = 'rgba(205,255,0,0.75)';
@@ -884,7 +884,7 @@ tr.exportTo('tr.ui.e.chrome.cc', function() {
     },
 
     getMinMaxForHeatmap_: function(tiles, heatmapType) {
-      var range = new tr.b.Range();
+      var range = new tr.b.math.Range();
       if (heatmapType === TILE_HEATMAP_TYPE.USING_GPU_MEMORY) {
         range.addValue(0);
         range.addValue(1);
@@ -1116,7 +1116,7 @@ tr.exportTo('tr.ui.e.chrome.cc', function() {
         for (var i = 0; i < tracedInputLatencies.length; i++) {
           var coordinatesArray = tracedInputLatencies[i].args.data.coordinates;
           for (var j = 0; j < coordinatesArray.length; j++) {
-            var inputQuad = tr.b.Quad.fromXYWH(
+            var inputQuad = tr.b.math.Quad.fromXYWH(
                 coordinatesArray[j].x - 25,
                 coordinatesArray[j].y - 25,
                 50,