DevTools: fix npm_test architecture check

third_party/WebKit/Source/devtools/scripts/npm_test.js

Index: third_party/WebKit/Source/devtools/scripts/npm_test.js
diff --git a/third_party/WebKit/Source/devtools/scripts/npm_test.js b/third_party/WebKit/Source/devtools/scripts/npm_test.js
index 096d65fc4da1bfc7f32e5195c4d2f056fbde8987..1a60ad5fa5712ae810c06bac4279bccdaa6cb2ed 100644
--- a/third_party/WebKit/Source/devtools/scripts/npm_test.js
+++ b/third_party/WebKit/Source/devtools/scripts/npm_test.js
@@ -145,14 +145,10 @@ function copyFrontend(contentShellResourcesPath) {
 
 function getPlatform() {
   if (process.platform === 'linux') {
-    if (process.arch === 'x64')
-      return 'Linux_x64';
-    throw new Error('Pre-compiled content shells are only available for x64 on Linux');
+    return 'Linux_x64';
   }
   if (process.platform === 'win32') {
-    if (process.arch === 'x64')
-      return 'Win_x64';
-    return 'Win';
+    return 'Win_x64';
   }
   if (process.platform === 'darwin')
     return 'Mac';