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..364ef61563102ac9c33c7df40773ce29d477c50d 100644
--- a/content/browser/android/child_process_launcher_android.cc
+++ b/content/browser/android/child_process_launcher_android.cc
@@ -81,6 +81,7 @@ static void OnChildProcessStarted(JNIEnv*,
 
 void StartChildProcess(
     const CommandLine::StringVector& argv,
+    int child_process_id,
     const std::vector<content::FileDescriptorInfo>& files_to_register,
     const StartChildProcessCallback& callback) {
   JNIEnv* env = AttachCurrentThread();
@@ -119,6 +120,7 @@ void StartChildProcess(
   Java_ChildProcessLauncher_start(env,
       base::android::GetApplicationContext(),
       j_argv.obj(),
+      child_process_id,
       j_file_ids.obj(),
       j_file_fds.obj(),
       j_file_auto_close.obj(),
@@ -159,6 +161,17 @@ jobject GetViewSurface(JNIEnv* env, jclass clazz, jint surface_id) {
   return CompositorImpl::GetSurface(surface_id);
 }
 
+jobject GetSurfaceTextureSurface(JNIEnv* env,
+                                 jclass clazz,
+                                 jint surface_texture_id,
+                                 jint pid) {
+  // 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, pid);

[piman, 2014/03/27 01:07:25]

Should there be a check somewhere to ensure a renderer can't access a ST from
another renderer?

[reveman, 2014/03/27 14:48:11]

This is done in the Java code. See line 436 in ChildProcessLauncher.java of
latest patch.

+}
+
 jboolean IsSingleProcess(JNIEnv* env, jclass clazz) {
   return CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess);
 }