Merge from Chromium at DEPS revision 251904

This commit was generated by merge_to_master.py.

Change-Id: I1f9543259d7d2a57d81aa41a1b84f85837439d21
diff --git a/build/build_config.h b/build/build_config.h
index 143cf3e..2a4837b 100644
--- a/build/build_config.h
+++ b/build/build_config.h
@@ -50,6 +50,8 @@
 #elif defined(__sun)
 #define OS_SOLARIS 1
 #define TOOLKIT_GTK
+#elif defined(__QNXNTO__)
+#define OS_QNX 1
 #else
 #error Please add support for your platform in build/build_config.h
 #endif
@@ -68,7 +70,7 @@
 // more specific macro.
 #if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) ||     \
     defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_ANDROID) ||  \
-    defined(OS_NACL)
+    defined(OS_NACL) || defined(OS_QNX)
 #define OS_POSIX 1
 #endif
 
@@ -106,6 +108,11 @@
 #define ARCH_CPU_ARMEL 1
 #define ARCH_CPU_32_BITS 1
 #define ARCH_CPU_LITTLE_ENDIAN 1
+#elif defined(__arm64__)
+#define ARCH_CPU_ARM_FAMILY 1
+#define ARCH_CPU_ARM64 1
+#define ARCH_CPU_64_BITS 1
+#define ARCH_CPU_LITTLE_ENDIAN 1
 #elif defined(__pnacl__)
 #define ARCH_CPU_32_BITS 1
 #define ARCH_CPU_LITTLE_ENDIAN 1