[Device Service] Add ACCELEROMETER implementation on Mac to //device/generic_sensor

device/generic_sensor/BUILD.gn

Index: device/generic_sensor/BUILD.gn
diff --git a/device/generic_sensor/BUILD.gn b/device/generic_sensor/BUILD.gn
index de71e31dd6d99ac3b54a2c177f9094abfe37c118..f95b0a1b20ca513b3413aa7b44b5c58836e5f0fb 100644
--- a/device/generic_sensor/BUILD.gn
+++ b/device/generic_sensor/BUILD.gn
@@ -17,6 +17,8 @@ component("generic_sensor") {
     "linux/sensor_data_linux.h",
     "platform_sensor.cc",
     "platform_sensor.h",
+    "platform_sensor_accelerometer_mac.cc",
+    "platform_sensor_accelerometer_mac.h",
     "platform_sensor_ambient_light_mac.cc",
     "platform_sensor_ambient_light_mac.h",
     "platform_sensor_android.cc",
@@ -66,8 +68,14 @@ component("generic_sensor") {
   }
 
   if (is_mac) {
-    deps += [ "//device/sensors/public/cpp:full" ]
-    libs = [ "IOKit.framework" ]
+    deps += [
+      "//device/sensors/public/cpp:full",
+      "//third_party/sudden_motion_sensor",
+    ]
+    libs = [
+      "CoreFoundation.framework",
+      "IOKit.framework",
+    ]
   }
 
   if (use_udev) {