Re-enable MediaBuffer shared memory use

This was accidentally removed when converting MediaExtractorService
to AIDL, but is needed for large MediaBuffers

Bug: 147152626
Bug: 147835592
Test: CTS, manual test app

Change-Id: I403968efa4319f316aa2ba5c0d7db71a0781b883

services/mediaextractor/Android.bp

@@ -11,6 +11,7 @@ cc_library_shared {
         "libdatasource",
         "libmedia",
         "libstagefright",
+        "libstagefright_foundation",
         "libbinder",
         "libutils",
         "liblog",

services/mediaextractor/MediaExtractorService.cpp

@@ -45,6 +45,7 @@ MediaExtractorService::~MediaExtractorService() {
 
     sp<DataSource> localSource = CreateDataSourceFromIDataSource(remoteSource);
 
+    MediaBuffer::useSharedMemory();
     sp<IMediaExtractor> extractor = MediaExtractorFactory::CreateFromService(
             localSource,
             mime.get() ? mime.get()->c_str() : nullptr);