Switch tracing to new flexbox.

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

Index: tracing/tracing/ui/extras/chrome/cc/picture_debugger.html
diff --git a/tracing/tracing/ui/extras/chrome/cc/picture_debugger.html b/tracing/tracing/ui/extras/chrome/cc/picture_debugger.html
index f1a9b4b218e67539571b5745dc4b9fc49816c74c..408a3d47af7bbdad3ad00ca54af454838ce16610 100644
--- a/tracing/tracing/ui/extras/chrome/cc/picture_debugger.html
+++ b/tracing/tracing/ui/extras/chrome/cc/picture_debugger.html
@@ -23,25 +23,25 @@ found in the LICENSE file.
 <template id="tr-ui-e-chrome-cc-picture-debugger-template">
   <style>
   * /deep/ tr-ui-e-chrome-cc-picture-debugger {
-    -webkit-flex: 1 1 auto;
-    -webkit-flex-direction: row;
-    display: -webkit-flex;
+    flex: 1 1 auto;
+    flex-direction: row;
+    display: flex;
   }
 
   * /deep/ tr-ui-e-chrome-cc-picture-debugger > tr-ui-a-generic-object-view {
-    -webkit-flex-direction: column;
-    display: -webkit-flex;
+    flex-direction: column;
+    display: flex;
     width: 400px;
   }
 
   * /deep/ tr-ui-e-chrome-cc-picture-debugger > left-panel {
-    -webkit-flex-direction: column;
-    display: -webkit-flex;
+    flex-direction: column;
+    display: flex;
     min-width: 300px;
   }
 
   * /deep/ tr-ui-e-chrome-cc-picture-debugger > left-panel > picture-info {
-    -webkit-flex: 0 0 auto;
+    flex: 0 0 auto;
     padding-top: 2px;
   }
 
@@ -53,7 +53,7 @@ found in the LICENSE file.
   }
 
   * /deep/ tr-ui-e-chrome-cc-picture-debugger > tr-ui-b-drag-handle {
-    -webkit-flex: 0 0 auto;
+    flex: 0 0 auto;
   }
 
   * /deep/ tr-ui-e-chrome-cc-picture-debugger .filename {
@@ -62,9 +62,9 @@ found in the LICENSE file.
   }
 
   * /deep/ tr-ui-e-chrome-cc-picture-debugger > right-panel {
-    -webkit-flex: 1 1 auto;
-    -webkit-flex-direction: column;
-    display: -webkit-flex;
+    flex: 1 1 auto;
+    flex-direction: column;
+    display: flex;
   }
 
   * /deep/ tr-ui-e-chrome-cc-picture-debugger > right-panel >