Move system.* family of APIs to extensions/

extensions/browser/extensions_browser_client.h

Index: extensions/browser/extensions_browser_client.h
diff --git a/extensions/browser/extensions_browser_client.h b/extensions/browser/extensions_browser_client.h
index 293b2af7039e152ae8fdc8eb6070cc9dac4035c1..42a82d7d8fa1545971888052ae9b0201258b5d03 100644
--- a/extensions/browser/extensions_browser_client.h
+++ b/extensions/browser/extensions_browser_client.h
@@ -17,6 +17,7 @@ class PrefService;
 namespace base {
 class CommandLine;
 class FilePath;
+class ListValue;
 }
 
 namespace content {
@@ -179,6 +180,11 @@ class ExtensionsBrowserClient {
   virtual ComponentExtensionResourceManager*
   GetComponentExtensionResourceManager() = 0;
 
+  // Propage a event to all the renderers. The implementation must be safe to

[Yoyo Zhou, 2014/07/15 00:39:13]

typo: Propagate
I would write: "all the renderers in every browser context." (strictly speaking,
not true because of incognito profiles, but I think that's more than we want to
get into in this comment)

+  // call from any thread.
+  virtual void BroadcastEventToRenderers(const std::string& event_name,
+                                         scoped_ptr<base::ListValue> args) = 0;
+
   // Returns the single instance of |this|.
   static ExtensionsBrowserClient* Get();