DevTools: disable the Chrome tab debugging warning for force-installed extensions.

chrome/browser/extensions/api/debugger/debugger_api.cc

Index: chrome/browser/extensions/api/debugger/debugger_api.cc
diff --git a/chrome/browser/extensions/api/debugger/debugger_api.cc b/chrome/browser/extensions/api/debugger/debugger_api.cc
index b0ad14b977535ad6f3d61b0d1550461c95c03666..6dffd9cb459c2c0dad1ee890e8b8796b46c46055 100644
--- a/chrome/browser/extensions/api/debugger/debugger_api.cc
+++ b/chrome/browser/extensions/api/debugger/debugger_api.cc
@@ -340,14 +340,20 @@ ExtensionDevToolsClientHost::ExtensionDevToolsClientHost(
 
   // Attach to debugger and tell it we are ready.
   agent_host_->AttachClient(this);
-
-  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           ::switches::kSilentDebuggerExtensionAPI)) {
-    infobar_ = ExtensionDevToolsInfoBar::Create(
-        extension_id, extension_name, this,
-        base::Bind(&ExtensionDevToolsClientHost::InfoBarDismissed,
-                   base::Unretained(this)));
+    return;
   }
+
+  const Extension* extension =
+      ExtensionRegistry::Get(profile)->enabled_extensions().GetByID(
+          extension_id);
+  if (Manifest::IsPolicyLocation(extension->location()))

[Devlin, 2017/02/23 21:46:40]

nit: Can we add a comment here like:
// We allow policy-installed extensions to circumvent the normal
// infobar warning. See crbug.com/693621.

+    return;
+  infobar_ = ExtensionDevToolsInfoBar::Create(
+      extension_id, extension_name, this,
+      base::Bind(&ExtensionDevToolsClientHost::InfoBarDismissed,
+                 base::Unretained(this)));
 }
 
 ExtensionDevToolsClientHost::~ExtensionDevToolsClientHost() {