Clean up ResourceHandler API.

content/browser/loader/resource_loader_unittest.cc

Index: content/browser/loader/resource_loader_unittest.cc
diff --git a/content/browser/loader/resource_loader_unittest.cc b/content/browser/loader/resource_loader_unittest.cc
index 81307ced82b29ebb1150f429b33deb4fb04e222c..bf4f52f27c47089c9381558dee3229eda0b3defc 100644
--- a/content/browser/loader/resource_loader_unittest.cc
+++ b/content/browser/loader/resource_loader_unittest.cc
@@ -66,6 +66,8 @@ class ClientCertStoreStub : public net::ClientCertStore {
 // initialize ResourceLoader.
 class ResourceHandlerStub : public ResourceHandler {
  public:
+  ResourceHandlerStub() : ResourceHandler(NULL) {}
+
   virtual bool OnUploadProgress(int request_id,
                                 uint64 position,
                                 uint64 size) OVERRIDE {
@@ -90,7 +92,7 @@ class ResourceHandlerStub : public ResourceHandler {
   }
 
   virtual bool OnWillRead(int request_id,
-                          net::IOBuffer** buf,
+                          scoped_refptr<net::IOBuffer>* buf,
                           int* buf_size,
                           int min_size) OVERRIDE {
     return true;