Introduce ResourceRequesterInfo to abstract the requester of resource request

content/browser/loader/async_revalidation_manager_unittest.cc

Index: content/browser/loader/async_revalidation_manager_unittest.cc
diff --git a/content/browser/loader/async_revalidation_manager_unittest.cc b/content/browser/loader/async_revalidation_manager_unittest.cc
index b06f63ce1682bfc4ffa0e1ef897d44cea8dad470..1ad472ab008905fd6649ec2617eb5afe443ef256 100644
--- a/content/browser/loader/async_revalidation_manager_unittest.cc
+++ b/content/browser/loader/async_revalidation_manager_unittest.cc
@@ -25,7 +25,6 @@
 #include "content/common/resource_request.h"
 #include "content/public/browser/resource_context.h"
 #include "content/public/common/appcache_info.h"
-#include "content/public/common/process_type.h"
 #include "content/public/common/resource_type.h"
 #include "content/public/test/test_browser_context.h"
 #include "content/public/test/test_browser_thread_bundle.h"
@@ -207,13 +206,13 @@ class BlackholeFilter : public ResourceMessageFilter {
   explicit BlackholeFilter(ResourceContext* resource_context)
       : ResourceMessageFilter(
             ChildProcessHostImpl::GenerateChildProcessUniqueId(),
-            PROCESS_TYPE_RENDERER,
             nullptr,
             nullptr,
             nullptr,
             nullptr,
             base::Bind(&BlackholeFilter::GetContexts, base::Unretained(this))),
         resource_context_(resource_context) {
+    InitializeForTest();
     ChildProcessSecurityPolicyImpl::GetInstance()->Add(child_id());
   }
 
@@ -307,7 +306,7 @@ class AsyncRevalidationManagerTest : public ::testing::Test {
     ResourceRequest request =
         CreateResourceRequest("GET", RESOURCE_TYPE_SUB_RESOURCE, url);
     ResourceHostMsg_RequestResource msg(render_view_id, request_id, request);
-    host_.OnMessageReceived(msg, filter_.get());
+    filter_->OnMessageReceived(msg);
     base::RunLoop().RunUntilIdle();
   }
 
@@ -344,7 +343,7 @@ TEST_F(AsyncRevalidationManagerTest, AsyncRevalidationNotSupportedForPOST) {
   ResourceRequest request = CreateResourceRequest(
       "POST", RESOURCE_TYPE_SUB_RESOURCE, GURL("http://example.com/baz.php"));
   ResourceHostMsg_RequestResource msg(0, 1, request);
-  host_.OnMessageReceived(msg, filter_.get());
+  filter_->OnMessageReceived(msg);
   base::RunLoop().RunUntilIdle();
 
   net::URLRequest* url_request(