gpu: Add the ability to wait on upload completion.

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index 600c02f3751a2ab72eed498be7ee0f02e628130d..cde17681e4448c6b6399572718d2416081560c07 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -3439,6 +3439,13 @@ void GLES2Implementation::AsyncTexSubImage2DCHROMIUM(
   return;
 }
 
+void GLES2Implementation::WaitAsyncTexImage2DCHROMIUM(GLenum target) {
+  GPU_CLIENT_SINGLE_THREAD_CHECK();
+  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glWaitAsyncTexImage2DCHROMIUM()");

[greggman, 2013/03/04 21:25:53]

log the target with GLES2Util::GetStringTextureTarget(target)?

See line 3405

[Sami, 2013/03/05 12:25:26]

Well spotted, fixed.

+  helper_->WaitAsyncTexImage2DCHROMIUM(target);
+  CheckGLError();
+}
+
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.