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 293b2af7039e152ae8fdc8eb6070cc9dac4035c1..ba02170ca945a7fa25275315a5c58c89bd3cd8ef 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;
@@ -179,6 +180,9 @@ 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();