Replace usage of basictypes.h with a combination of stdint.h and base/macros.h.

components/component_updater/component_updater_utils.cc

Index: components/component_updater/component_updater_utils.cc
diff --git a/components/component_updater/component_updater_utils.cc b/components/component_updater/component_updater_utils.cc
index ef73f3418efbb85efba4be681e2191bb919d7a9d..a8bcec8bc64056fae7a93b8225bc230c66dcc16e 100644
--- a/components/component_updater/component_updater_utils.cc
+++ b/components/component_updater/component_updater_utils.cc
@@ -4,6 +4,7 @@
 
 #include "components/component_updater/component_updater_utils.h"
 
+#include <stdint.h>
 #include <cmath>
 
 #include "base/files/file_path.h"
@@ -33,7 +34,7 @@ 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();
+  const int64_t phys_mem = base::SysInfo::AmountOfPhysicalMemory();
   return static_cast<int>(std::floor(0.5 + phys_mem / kOneGB));
 }