Adds command line switch to disable resize lock

content/browser/renderer_host/delegated_frame_host.cc

Index: content/browser/renderer_host/delegated_frame_host.cc
diff --git a/content/browser/renderer_host/delegated_frame_host.cc b/content/browser/renderer_host/delegated_frame_host.cc
index 5540e0be19f94261c9fb2806fe4d15c6339adc02..78e5ca788099f9423101c2b98495572cc9e105c2 100644
--- a/content/browser/renderer_host/delegated_frame_host.cc
+++ b/content/browser/renderer_host/delegated_frame_host.cc
@@ -120,6 +120,12 @@ void DelegatedFrameHost::MaybeCreateResizeLock() {
 }
 
 bool DelegatedFrameHost::ShouldCreateResizeLock() {
+  static const bool is_disabled =
+      base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableResizeLock);
+  if (is_disabled)
+    return false;
+
   if (!client_->DelegatedFrameCanCreateResizeLock())
     return false;