Adding browsertest to verify that updating forced-installed extensions is possible.

chrome/browser/policy/cloud/test_request_interceptor.cc

Index: chrome/browser/policy/cloud/test_request_interceptor.cc
diff --git a/chrome/browser/policy/cloud/test_request_interceptor.cc b/chrome/browser/policy/cloud/test_request_interceptor.cc
index 7805a26e565b74209336a4e41fe106ab397cf505..b36b63dd375ec3d19541b27332fd8f2962a8ef2e 100644
--- a/chrome/browser/policy/cloud/test_request_interceptor.cc
+++ b/chrome/browser/policy/cloud/test_request_interceptor.cc
@@ -12,6 +12,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_utils.h"
+#include "content/test/net/url_request_mock_http_job.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_errors.h"
 #include "net/base/upload_bytes_element_reader.h"
@@ -54,6 +55,15 @@ net::URLRequestJob* BadRequestJobCallback(
       request, network_delegate, headers, std::string(), true);
 }
 
+net::URLRequestJob* FileJobCallback(const base::FilePath& file_path,
+                                    net::URLRequest* request,
+                                    net::NetworkDelegate* network_delegate) {
+  return new content::URLRequestMockHTTPJob(
+      request,
+      network_delegate,
+      file_path);
+}
+
 // Parses the upload data in |request| into |request_msg|, and validates the
 // request. The query string in the URL must contain the |expected_type| for
 // the "request" parameter. Returns true if all checks succeeded, and the
@@ -254,4 +264,10 @@ TestRequestInterceptor::JobCallback TestRequestInterceptor::RegisterJob(
   return base::Bind(&RegisterJobCallback, expected_type, expect_reregister);
 }
 
+// static
+TestRequestInterceptor::JobCallback TestRequestInterceptor::FileJob(
+    const base::FilePath& file_path) {
+  return base::Bind(&FileJobCallback, file_path);
+}
+
 }  // namespace policy