Bug 1560174 - Prevent xmlns warning for breakpoint SVGs r=jlast

Differential Revision: https://phabricator.services.mozilla.com/D35362

--HG--
extra : moz-landing-system : lando

devtools/client/debugger/src/components/Editor/Breakpoint.js

@@ -23,7 +23,7 @@ import type {
 
 const breakpointSvg = document.createElement("div");
 breakpointSvg.innerHTML =
-  '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 60 15" width="60" height="15"><path d="M53.07.5H1.5c-.54 0-1 .46-1 1v12c0 .54.46 1 1 1h51.57c.58 0 1.15-.26 1.53-.7l4.7-6.3-4.7-6.3c-.38-.44-.95-.7-1.53-.7z"/></svg>';
+  '<svg viewBox="0 0 60 15" width="60" height="15"><path d="M53.07.5H1.5c-.54 0-1 .46-1 1v12c0 .54.46 1 1 1h51.57c.58 0 1.15-.26 1.53-.7l4.7-6.3-4.7-6.3c-.38-.44-.95-.7-1.53-.7z"/></svg>';
 
 type Props = {
   cx: ThreadContext,

devtools/client/debugger/src/components/Editor/ColumnBreakpoint.js

@@ -30,7 +30,7 @@ type Props = {
 
 const breakpointButton = document.createElement("button");
 breakpointButton.innerHTML =
-  '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 11 13" width="11" height="13"><path d="M5.07.5H1.5c-.54 0-1 .46-1 1v10c0 .54.46 1 1 1h3.57c.58 0 1.15-.26 1.53-.7l3.7-5.3-3.7-5.3C6.22.76 5.65.5 5.07.5z"/></svg>';
+  '<svg viewBox="0 0 11 13" width="11" height="13"><path d="M5.07.5H1.5c-.54 0-1 .46-1 1v10c0 .54.46 1 1 1h3.57c.58 0 1.15-.26 1.53-.7l3.7-5.3-3.7-5.3C6.22.76 5.65.5 5.07.5z"/></svg>';
 
 function makeBookmark({ breakpoint }, { onClick, onContextMenu }) {
   const bp = breakpointButton.cloneNode(true);