Add initial GpuMemoryBufferSurfaceTexture implementation.

content/browser/android/child_process_launcher_android.cc

Index: content/browser/android/child_process_launcher_android.cc
diff --git a/content/browser/android/child_process_launcher_android.cc b/content/browser/android/child_process_launcher_android.cc
index cf915e4a42a837de1f7a824c63964e205cbbbe4f..611c58320dd6f7702d95c82a47579f63c0566672 100644
--- a/content/browser/android/child_process_launcher_android.cc
+++ b/content/browser/android/child_process_launcher_android.cc
@@ -159,6 +159,16 @@ jobject GetViewSurface(JNIEnv* env, jclass clazz, jint surface_id) {
   return CompositorImpl::GetSurface(surface_id);
 }
 
+jobject GetSurfaceTextureSurface(JNIEnv* env,
+                                 jclass clazz,
+                                 jint surface_texture_id) {
+  // This is a synchronous call from a renderer process and is expected to be
+  // handled on a binder thread. Handling this on the UI thread will lead
+  // to deadlocks.
+  DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
+  return CompositorImpl::GetSurfaceTextureSurface(surface_texture_id);
+}
+
 jboolean IsSingleProcess(JNIEnv* env, jclass clazz) {
   return CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess);
 }