Remove redundant local parameters in Client

The Android version upgrade modified the declaration of createLayer and mirrorLayer functions in SurfaceFlinger, removed multiple parameters of objects such as IBinder, and also modified the mirrorDisplay function in Client, causing their local variables sp<IBinder> handle to be redundant.

Signed-off-by:
Shuangxi Xiang <xiangshuangxi@xiaomi.corp-partner.google.com>

Change-Id: Ifa8db1993fa46209a9d935c9ff588d2d0dc4c5f8

Author: Shuangxi Xiang

services/surfaceflinger/Client.cpp

@@ -53,7 +53,6 @@ binder::Status Client::createSurface(const std::string& name, int32_t flags,
                                      const sp<IBinder>& parent, const gui::LayerMetadata& metadata,
                                      gui::CreateSurfaceResult* outResult) {
     // We rely on createLayer to check permissions.
-    sp<IBinder> handle;
     LayerCreationArgs args(mFlinger.get(), sp<Client>::fromExisting(this), name.c_str(),
                            static_cast<uint32_t>(flags), std::move(metadata));
     args.parentHandle = parent;
@@ -101,15 +100,13 @@ binder::Status Client::getLayerFrameStats(const sp<IBinder>& handle, gui::FrameS
 
 binder::Status Client::mirrorSurface(const sp<IBinder>& mirrorFromHandle,
                                      gui::CreateSurfaceResult* outResult) {
-    sp<IBinder> handle;
     LayerCreationArgs args(mFlinger.get(), sp<Client>::fromExisting(this), "MirrorRoot",
                            0 /* flags */, gui::LayerMetadata());
     status_t status = mFlinger->mirrorLayer(args, mirrorFromHandle, *outResult);
     return binderStatusFromStatusT(status);
 }
 
 binder::Status Client::mirrorDisplay(int64_t displayId, gui::CreateSurfaceResult* outResult) {
-    sp<IBinder> handle;
     LayerCreationArgs args(mFlinger.get(), sp<Client>::fromExisting(this),
                            "MirrorRoot-" + std::to_string(displayId), 0 /* flags */,
                            gui::LayerMetadata());