wifi: Change namespace

Move the implementation to "android::hardware::wifi:V1_0::implementation"
namespace.
This is following the style guidelines in NFC HIDL
implementation(go/aog/279421).

While there,
Run checkstyle to correct formatting issues.

Bug:31936700
Test: mmma -j32 hardware/interfaces/wifi/1.0/default
Change-Id: I5600a60a0041b3318ed9289823ec335a8ed8a83d
diff --git a/wifi/1.0/default/wifi_chip.h b/wifi/1.0/default/wifi_chip.h
index 583c151..d776644 100644
--- a/wifi/1.0/default/wifi_chip.h
+++ b/wifi/1.0/default/wifi_chip.h
@@ -19,8 +19,8 @@
 
 #include <set>
 
-#include <android/hardware/wifi/1.0/IWifiChip.h>
 #include <android-base/macros.h>
+#include <android/hardware/wifi/1.0/IWifiChip.h>
 #include <hardware_legacy/wifi_hal.h>
 
 #include "wifi_hal_state.h"
@@ -28,16 +28,17 @@
 namespace android {
 namespace hardware {
 namespace wifi {
+namespace V1_0 {
+namespace implementation {
 
-class WifiChip : public V1_0::IWifiChip {
+class WifiChip : public IWifiChip {
  public:
-  WifiChip(
-      WifiHalState* hal_state, wifi_interface_handle interface_handle);
+  WifiChip(WifiHalState* hal_state, wifi_interface_handle interface_handle);
 
   void Invalidate();
 
   Return<void> registerEventCallback(
-      const sp<V1_0::IWifiChipEventCallback>& callback) override;
+      const sp<IWifiChipEventCallback>& callback) override;
 
   Return<void> getAvailableModes(getAvailableModes_cb cb) override;
 
@@ -54,11 +55,13 @@
  private:
   WifiHalState* hal_state_;
   wifi_interface_handle interface_handle_;
-  std::set<sp<V1_0::IWifiChipEventCallback>> callbacks_;
+  std::set<sp<IWifiChipEventCallback>> callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(WifiChip);
 };
 
+}  // namespace implementation
+}  // namespace V1_0
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android