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

chrome/browser/component_updater/component_updater_utils.cc

Index: chrome/browser/component_updater/component_updater_utils.cc
diff --git a/chrome/browser/component_updater/component_updater_utils.cc b/chrome/browser/component_updater/component_updater_utils.cc
index d6cb1e0ee220d1d83f1babc51870441a63ef340e..ec6d497ac329fb6931331ece0c8b9d7bd091207c 100644
--- a/chrome/browser/component_updater/component_updater_utils.cc
+++ b/chrome/browser/component_updater/component_updater_utils.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/component_updater/component_updater_utils.h"
 
+#include <cmath>
+
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/guid.h"
@@ -25,6 +27,17 @@
 
 namespace component_updater {
 
+namespace {
+
+// Returns the amount of physical memory in GB, rounded to the nearest GB.
+int GetPhysicalMemoryGB() {
+  const double kOneGB = 1024 * 1024 * 1024;
+  const int64 phys_mem = base::SysInfo::AmountOfPhysicalMemory();
+  return static_cast<int>(std::floor(0.5 + phys_mem / kOneGB));
+}
+
+}  // namespace
+
 std::string BuildProtocolRequest(const std::string& request_body,
                                  const std::string& additional_attributes) {
   const std::string prod_id(chrome::OmahaQueryParams::GetProdIdString(
@@ -63,6 +76,11 @@ std::string BuildProtocolRequest(const std::string& request_body,
 #endif
   base::StringAppendF(&request, ">");
 
+  // HW platform information.
+  base::StringAppendF(&request,
+                      "<hw physmemory=\"%d\"/>",
+                      GetPhysicalMemoryGB());  // "physmem" in GB.
+
   // OS version and platform information.
   base::StringAppendF(
       &request,