make all libsurfaceflinger and libsensorservice symbols's visibility hidden

we only export the main entry-point.
this saves about 150KB.

Change-Id: I55eb2b6705386fdfa43860deb62f9cdd2a0982aa
diff --git a/services/sensorservice/Android.mk b/services/sensorservice/Android.mk
index dd698c5..14a4e55 100644
--- a/services/sensorservice/Android.mk
+++ b/services/sensorservice/Android.mk
@@ -12,11 +12,12 @@
     SensorDevice.cpp \
     SensorFusion.cpp \
     SensorInterface.cpp \
-    SensorService.cpp \
-
+    SensorService.cpp
 
 LOCAL_CFLAGS:= -DLOG_TAG=\"SensorService\"
 
+LOCAL_CFLAGS += -fvisibility=hidden
+
 LOCAL_SHARED_LIBRARIES := \
 	libcutils \
 	libhardware \
@@ -27,8 +28,6 @@
 	libui \
 	libgui
 
-
-
 LOCAL_MODULE:= libsensorservice
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/services/sensorservice/SensorService.h b/services/sensorservice/SensorService.h
index 25e5f76..ff3b555 100644
--- a/services/sensorservice/SensorService.h
+++ b/services/sensorservice/SensorService.h
@@ -50,12 +50,13 @@
         public BnSensorServer,
         protected Thread
 {
-   friend class BinderService<SensorService>;
+    friend class BinderService<SensorService>;
 
-   static const nsecs_t MINIMUM_EVENTS_PERIOD =   1000000; // 1000 Hz
-   static const char* WAKE_LOCK_NAME;
+    static const nsecs_t MINIMUM_EVENTS_PERIOD =   1000000; // 1000 Hz
+    static const char* WAKE_LOCK_NAME;
 
-            SensorService();
+    static char const* getServiceName() ANDROID_API { return "sensorservice"; }
+    SensorService() ANDROID_API;
     virtual ~SensorService();
 
     virtual void onFirstRef();
@@ -116,9 +117,9 @@
     void registerSensor(SensorInterface* sensor);
     void registerVirtualSensor(SensorInterface* sensor);
     status_t cleanupWithoutDisable(const sp<SensorEventConnection>& connection,
-        int handle);
+            int handle);
     void cleanupAutoDisabledSensor(const sp<SensorEventConnection>& connection,
-        sensors_event_t const* buffer, const int count);
+            sensors_event_t const* buffer, const int count);
 
     // constants
     Vector<Sensor> mSensorList;
@@ -138,8 +139,6 @@
     KeyedVector<int32_t, sensors_event_t> mLastEventSeen;
 
 public:
-    static char const* getServiceName() { return "sensorservice"; }
-
     void cleanupConnection(SensorEventConnection* connection);
     status_t enable(const sp<SensorEventConnection>& connection, int handle);
     status_t disable(const sp<SensorEventConnection>& connection, int handle);
diff --git a/services/surfaceflinger/Android.mk b/services/surfaceflinger/Android.mk
index ec296d3..71b235a 100644
--- a/services/surfaceflinger/Android.mk
+++ b/services/surfaceflinger/Android.mk
@@ -41,6 +41,8 @@
   LOCAL_CFLAGS += -DNUM_FRAMEBUFFER_SURFACE_BUFFERS=$(NUM_FRAMEBUFFER_SURFACE_BUFFERS)
 endif
 
+LOCAL_CFLAGS += -fvisibility=hidden
+
 LOCAL_SHARED_LIBRARIES := \
 	libcutils \
 	liblog \
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 66c2d42..e7745b8 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -79,11 +79,11 @@
                        private HWComposer::EventHandler
 {
 public:
-    static char const* getServiceName() {
+    static char const* getServiceName() ANDROID_API {
         return "SurfaceFlinger";
     }
 
-    SurfaceFlinger();
+    SurfaceFlinger() ANDROID_API;
 
     enum {
         EVENT_VSYNC = HWC_EVENT_VSYNC