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..ae17ebac63c698e75fdee5e862391acf10f9ada5 100644
--- a/content/browser/renderer_host/delegated_frame_host.cc
+++ b/content/browser/renderer_host/delegated_frame_host.cc
@@ -120,6 +120,14 @@ void DelegatedFrameHost::MaybeCreateResizeLock() {
 }
 
 bool DelegatedFrameHost::ShouldCreateResizeLock() {
+  static const bool is_enabled =
+      !base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableResizeLock) ||
+      base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kEnableResizeLock) == "true";

[piman, 2016/07/08 18:42:44]

Do you want instead do a --disable-resize-lock?

Otherwise, this is a bit confusing, since adding --enable-resize-lock (and no
value) to the command line will disable the locks.

[sky, 2016/07/08 19:16:53]

I was trying to avoid the negative, but you're right, --disable-resize-lock is
simpler.

+  if (!is_enabled)
+    return false;
+
   if (!client_->DelegatedFrameCanCreateResizeLock())
     return false;