The component update checks should include the amount of installed memory.

chrome/browser/component_updater/test/update_checker_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
@@ skipping 174 matching lines @@
   EXPECT_NE(
       string::npos,
       post_interceptor_->GetRequests()[0].find(
           "request protocol=\"3.0\" extra=\"params\""));
   EXPECT_NE(
       string::npos,
       post_interceptor_->GetRequests()[0].find(
           "app appid=\"jebgalgnebhfojomionfpkfelancnnkf\" version=\"0.9\">"
           "<updatecheck /><packages><package fp=\"fp1\"/></packages></app>"));
 
+  EXPECT_NE(string::npos,
+            post_interceptor_->GetRequests()[0].find("<hw physmemory="));
+
   // Sanity check the arguments of the callback after parsing.
   EXPECT_EQ(0, error_);
   EXPECT_TRUE(error_message_.empty());
   EXPECT_EQ(1ul, results_.list.size());
   EXPECT_STREQ("jebgalgnebhfojomionfpkfelancnnkf",
                results_.list[0].extension_id.c_str());
   EXPECT_STREQ("1.0", results_.list[0].manifest.version.c_str());
 }
 
 TEST_F(UpdateCheckerTest, UpdateNetworkError) {
@@ skipping 22 matching lines @@
       << post_interceptor_->GetRequestsAsString();
   EXPECT_EQ(1, post_interceptor_->GetCount())
       << post_interceptor_->GetRequestsAsString();
 
   EXPECT_NE(0, error_);
   EXPECT_STREQ("network error", error_message_.c_str());
   EXPECT_EQ(0ul, results_.list.size());
 }
 
 }  // namespace component_updater