net: boost AES-GCM ciphers if the machine has AES-NI.

base/cpu.cc

Index: base/cpu.cc
diff --git a/base/cpu.cc b/base/cpu.cc
index 78064e2815f4bed5da737174289374748707e6e5..2ae96e1c2cedad9eb6c0b9ab70fb973d4ff090a9 100644
--- a/base/cpu.cc
+++ b/base/cpu.cc
@@ -33,6 +33,7 @@ CPU::CPU()
     has_ssse3_(false),
     has_sse41_(false),
     has_sse42_(false),
+    has_aesni_(false),
     has_non_stop_time_stamp_counter_(false),
     cpu_vendor_("unknown") {
   Initialize();
@@ -113,14 +114,15 @@ void CPU::Initialize() {
     type_ = (cpu_info[0] >> 12) & 0x3;
     ext_model_ = (cpu_info[0] >> 16) & 0xf;
     ext_family_ = (cpu_info[0] >> 20) & 0xff;
-    has_mmx_ = (cpu_info[3] & 0x00800000) != 0;
-    has_sse_ = (cpu_info[3] & 0x02000000) != 0;
-    has_sse2_ = (cpu_info[3] & 0x04000000) != 0;
-    has_sse3_ = (cpu_info[2] & 0x00000001) != 0;
+    has_mmx_ =   (cpu_info[3] & 0x00800000) != 0;
+    has_sse_ =   (cpu_info[3] & 0x02000000) != 0;
+    has_sse2_ =  (cpu_info[3] & 0x04000000) != 0;
+    has_sse3_ =  (cpu_info[2] & 0x00000001) != 0;
     has_ssse3_ = (cpu_info[2] & 0x00000200) != 0;
     has_sse41_ = (cpu_info[2] & 0x00080000) != 0;
     has_sse42_ = (cpu_info[2] & 0x00100000) != 0;
-    has_avx_ = (cpu_info[2] & 0x10000000) != 0;
+    has_avx_ =   (cpu_info[2] & 0x10000000) != 0;
+    has_aesni_ = (cpu_info[2] & 0x02000000) != 0;
   }
 
   // Get the brand string of the cpu.