Extensions: Move cast_channel and hid 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 cb810b668a4dfa324158b89ba9ee9904a33a8829..7616d5cb63f20e3f8772b45a96fa2ad849e83c59 100644
--- a/extensions/browser/extensions_browser_client.h
+++ b/extensions/browser/extensions_browser_client.h
@@ -25,6 +25,7 @@ class WebContents;
 }
 
 namespace net {
+class NetLog;
 class NetworkDelegate;
 class URLRequest;
 class URLRequestJob;
@@ -177,6 +178,9 @@ class ExtensionsBrowserClient {
   virtual ComponentExtensionResourceManager*
   GetComponentExtensionResourceManager() = 0;
 
+  // Returns the embedder's net::NetLog.
+  virtual net::NetLog* GetNetLog() = 0;
+
   // Returns the single instance of |this|.
   static ExtensionsBrowserClient* Get();