Enable SurfaceTexture based zero-copy texture uploading on Android platform

content/app/android/child_process_service.cc

Index: content/app/android/child_process_service.cc
diff --git a/content/app/android/child_process_service.cc b/content/app/android/child_process_service.cc
index dae54e5941d31fbba56b4f9ce75843ef42ed9eea..943ee06f11ca22d8c032b4deb6e92049d9f40d3e 100644
--- a/content/app/android/child_process_service.cc
+++ b/content/app/android/child_process_service.cc
@@ -14,6 +14,7 @@
 #include "base/posix/global_descriptors.h"
 #include "content/child/child_thread.h"
 #include "content/common/android/surface_texture_peer.h"
+#include "content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h"
 #include "content/common/gpu/gpu_surface_lookup.h"
 #include "content/public/app/android_library_loader_hooks.h"
 #include "content/public/common/content_descriptors.h"
@@ -136,6 +137,18 @@ bool RegisterChildProcessService(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
+void SetupSurfaceTexture(JNIEnv* env,
+                         jclass clazz,
+                         jlong gpu_memory_buffer,
+                         jobject jsurface) {
+  ANativeWindow* window = NULL;
+  if (jsurface)
+    window = ANativeWindow_fromSurface(env, jsurface);

[Hongbo Min, 2014/03/18 06:10:03]

When would `window` be released?

+  GpuMemoryBufferImplSurfaceTexture* gpu_memory_buffer_handle =

[Hongbo Min, 2014/03/18 06:10:03]

Return as early as possible if window is NULL.

+      (GpuMemoryBufferImplSurfaceTexture*)(gpu_memory_buffer);
+  gpu_memory_buffer_handle->setNativeWindow(window);
+}
+
 void ShutdownMainThread(JNIEnv* env, jobject obj) {
   ChildThread::ShutdownThread();
 }