Fix uses of /deep/ in trace viewer.

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

Index: tracing/tracing/ui/extras/chrome/cc/layer_tree_host_impl_view.html
diff --git a/tracing/tracing/ui/extras/chrome/cc/layer_tree_host_impl_view.html b/tracing/tracing/ui/extras/chrome/cc/layer_tree_host_impl_view.html
index fd71596df8b613d796224466525c315cfd383127..f170d5a7b26270a1348ad4fdebbee9069c0e7193 100644
--- a/tracing/tracing/ui/extras/chrome/cc/layer_tree_host_impl_view.html
+++ b/tracing/tracing/ui/extras/chrome/cc/layer_tree_host_impl_view.html
@@ -5,9 +5,6 @@ Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 -->
 
-<link rel="stylesheet"
-      href="/tracing/ui/extras/chrome/cc/layer_tree_host_impl_view.css">
-
 <link rel="import" href="/tracing/extras/chrome/cc/layer_tree_host_impl.html">
 <link rel="import" href="/tracing/extras/chrome/cc/tile.html">
 <link rel="import" href="/tracing/ui/analysis/object_snapshot_view.html">
@@ -32,10 +29,18 @@ tr.exportTo('tr.ui.e.chrome.cc', function() {
 
     decorate() {
       Polymer.dom(this).classList.add('tr-ui-e-chrome-cc-lthi-s-view');
+      this.style.display = 'flex';
+      this.style.flexDirection = 'row';
+      this.style.flexGrow = 1;
+      this.style.flexShrink = 1;
+      this.style.flexBasis = 'auto';
 
       this.selection_ = undefined;
 
       this.layerPicker_ = new tr.ui.e.chrome.cc.LayerPicker();
+      this.layerPicker_.style.flexGrow = 1;
+      this.layerPicker_.style.flexShrink = 1;
+      this.layerPicker_.style.flexBasis = 'auto';
       this.layerPicker_.addEventListener(
           'selection-change',
           this.onLayerPickerSelectionChanged_.bind(this));
@@ -45,6 +50,9 @@ tr.exportTo('tr.ui.e.chrome.cc', function() {
           'selection-change',
           this.onLayerViewSelectionChanged_.bind(this));
       this.dragHandle_ = document.createElement('tr-ui-b-drag-handle');
+      this.dragHandle_.style.flexGrow = 0;
+      this.dragHandle_.style.flexShrink = 0;
+      this.dragHandle_.style.flexBasis = 'auto';
       this.dragHandle_.horizontal = false;
       this.dragHandle_.target = this.layerView_;