Add script to remove prefixed CSS from third_party/polymer.

third_party/polymer/v1_0/components-chromium/iron-flex-layout/iron-flex-layout-classes.html

Index: third_party/polymer/v1_0/components-chromium/iron-flex-layout/iron-flex-layout-classes.html
diff --git a/third_party/polymer/v1_0/components-chromium/iron-flex-layout/iron-flex-layout-classes.html b/third_party/polymer/v1_0/components-chromium/iron-flex-layout/iron-flex-layout-classes.html
index d382652b717ea05befdf8fe8c426540ade236c25..aebe1a25db0f8c2a7822d13d1bc380d17b813e1f 100644
--- a/third_party/polymer/v1_0/components-chromium/iron-flex-layout/iron-flex-layout-classes.html
+++ b/third_party/polymer/v1_0/components-chromium/iron-flex-layout/iron-flex-layout-classes.html
@@ -37,66 +37,45 @@ The following imports are available:
     <style>
       .layout.horizontal,
       .layout.vertical {
-        display: -ms-flexbox;
-        display: -webkit-flex;
         display: flex;
       }
 
       .layout.inline {
-        display: -ms-inline-flexbox;
-        display: -webkit-inline-flex;
         display: inline-flex;
       }
 
       .layout.horizontal {
-        -ms-flex-direction: row;
-        -webkit-flex-direction: row;
         flex-direction: row;
       }
 
       .layout.vertical {
-        -ms-flex-direction: column;
-        -webkit-flex-direction: column;
         flex-direction: column;
       }
 
       .layout.wrap {
-        -ms-flex-wrap: wrap;
-        -webkit-flex-wrap: wrap;
         flex-wrap: wrap;
       }
 
       .layout.center,
       .layout.center-center {
-        -ms-flex-align: center;
-        -webkit-align-items: center;
         align-items: center;
       }
 
       .layout.center-justified,
       .layout.center-center {
-        -ms-flex-pack: center;
-        -webkit-justify-content: center;
         justify-content: center;
       }
 
       .flex {
-        -ms-flex: 1 1 0.000000001px;
-        -webkit-flex: 1;
         flex: 1;
-        -webkit-flex-basis: 0.000000001px;
         flex-basis: 0.000000001px;
       }
 
       .flex-auto {
-        -ms-flex: 1 1 auto;
-        -webkit-flex: 1 1 auto;
         flex: 1 1 auto;
       }
 
       .flex-none {
-        -ms-flex: none;
-        -webkit-flex: none;
         flex: none;
       }
     </style>
@@ -109,26 +88,18 @@ The following imports are available:
     <style>
       .layout.horizontal-reverse,
       .layout.vertical-reverse {
-        display: -ms-flexbox;
-        display: -webkit-flex;
         display: flex;
       }
 
       .layout.horizontal-reverse {
-        -ms-flex-direction: row-reverse;
-        -webkit-flex-direction: row-reverse;
         flex-direction: row-reverse;
       }
 
       .layout.vertical-reverse {
-        -ms-flex-direction: column-reverse;
-        -webkit-flex-direction: column-reverse;
         flex-direction: column-reverse;
       }
 
       .layout.wrap-reverse {
-        -ms-flex-wrap: wrap-reverse;
-        -webkit-flex-wrap: wrap-reverse;
         flex-wrap: wrap-reverse;
       }
     </style>
@@ -143,27 +114,19 @@ The following imports are available:
        * Alignment in cross axis.
        */
       .layout.start {
-        -ms-flex-align: start;
-        -webkit-align-items: flex-start;
         align-items: flex-start;
       }
 
       .layout.center,
       .layout.center-center {
-        -ms-flex-align: center;
-        -webkit-align-items: center;
         align-items: center;
       }
 
       .layout.end {
-        -ms-flex-align: end;
-        -webkit-align-items: flex-end;
         align-items: flex-end;
       }
 
       .layout.baseline {
-        -ms-flex-align: baseline;
-        -webkit-align-items: baseline;
         align-items: baseline;
       }
 
@@ -171,33 +134,23 @@ The following imports are available:
        * Alignment in main axis.
        */
       .layout.start-justified {
-        -ms-flex-pack: start;
-        -webkit-justify-content: flex-start;
         justify-content: flex-start;
       }
 
       .layout.center-justified,
       .layout.center-center {
-        -ms-flex-pack: center;
-        -webkit-justify-content: center;
         justify-content: center;
       }
 
       .layout.end-justified {
-        -ms-flex-pack: end;
-        -webkit-justify-content: flex-end;
         justify-content: flex-end;
       }
 
       .layout.around-justified {
-        -ms-flex-pack: distribute;
-        -webkit-justify-content: space-around;
         justify-content: space-around;
       }
 
       .layout.justified {
-        -ms-flex-pack: justify;
-        -webkit-justify-content: space-between;
         justify-content: space-between;
       }
 
@@ -205,32 +158,22 @@ The following imports are available:
        * Self alignment.
        */
       .self-start {
-        -ms-align-self: flex-start;
-        -webkit-align-self: flex-start;
         align-self: flex-start;
       }
 
       .self-center {
-        -ms-align-self: center;
-        -webkit-align-self: center;
         align-self: center;
       }
 
       .self-end {
-        -ms-align-self: flex-end;
-        -webkit-align-self: flex-end;
         align-self: flex-end;
       }
 
       .self-stretch {
-        -ms-align-self: stretch;
-        -webkit-align-self: stretch;
         align-self: stretch;
       }
 
       .self-baseline {
-        -ms-align-self: baseline;
-        -webkit-align-self: baseline;
         align-self: baseline;
       };
 
@@ -238,37 +181,22 @@ The following imports are available:
        * multi-line alignment in main axis.
        */
       .layout.start-aligned {
-        -ms-flex-line-pack: start;  /* IE10 */
-        -ms-align-content: flex-start;
-        -webkit-align-content: flex-start;
         align-content: flex-start;
       }
 
       .layout.end-aligned {
-        -ms-flex-line-pack: end;  /* IE10 */
-        -ms-align-content: flex-end;
-        -webkit-align-content: flex-end;
         align-content: flex-end;
       }
 
       .layout.center-aligned {
-        -ms-flex-line-pack: center;  /* IE10 */
-        -ms-align-content: center;
-        -webkit-align-content: center;
         align-content: center;
       }
 
       .layout.between-aligned {
-        -ms-flex-line-pack: justify;  /* IE10 */
-        -ms-align-content: space-between;
-        -webkit-align-content: space-between;
         align-content: space-between;
       }
 
       .layout.around-aligned {
-        -ms-flex-line-pack: distribute;  /* IE10 */
-        -ms-align-content: space-around;
-        -webkit-align-content: space-around;
         align-content: space-around;
       }
     </style>
@@ -280,76 +208,51 @@ The following imports are available:
     <style>
       .flex,
       .flex-1 {
-        -ms-flex: 1 1 0.000000001px;
-        -webkit-flex: 1;
         flex: 1;
-        -webkit-flex-basis: 0.000000001px;
         flex-basis: 0.000000001px;
       }
 
       .flex-2 {
-        -ms-flex: 2;
-        -webkit-flex: 2;
         flex: 2;
       }
 
       .flex-3 {
-        -ms-flex: 3;
-        -webkit-flex: 3;
         flex: 3;
       }
 
       .flex-4 {
-        -ms-flex: 4;
-        -webkit-flex: 4;
         flex: 4;
       }
 
       .flex-5 {
-        -ms-flex: 5;
-        -webkit-flex: 5;
         flex: 5;
       }
 
       .flex-6 {
-        -ms-flex: 6;
-        -webkit-flex: 6;
         flex: 6;
       }
 
       .flex-7 {
-        -ms-flex: 7;
-        -webkit-flex: 7;
         flex: 7;
       }
 
       .flex-8 {
-        -ms-flex: 8;
-        -webkit-flex: 8;
         flex: 8;
       }
 
       .flex-9 {
-        -ms-flex: 9;
-        -webkit-flex: 9;
         flex: 9;
       }
 
       .flex-10 {
-        -ms-flex: 10;
-        -webkit-flex: 10;
         flex: 10;
       }
 
       .flex-11 {
-        -ms-flex: 11;
-        -webkit-flex: 11;
         flex: 11;
       }
 
       .flex-12 {
-        -ms-flex: 12;
-        -webkit-flex: 12;
         flex: 12;
       }
     </style>