Add a new command buffer function glScheduleCALayerInUseQueryCHROMIUM.

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 162ee43a3e430401cde201ca3707eef2d66a2ee4..7225f242f204cf08193d05b82b6f68e13fbf4b9c 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -4732,6 +4732,21 @@ void GLES2Implementation::ScheduleCALayerCHROMIUM(GLuint contents_texture_id,
                                    buffer.offset());
 }
 
+void GLES2Implementation::ScheduleCALayerInUseQueryCHROMIUM(
+    GLuint n,
+    const GLuint* textures) {
+  size_t shm_size = n * sizeof(GLuint);
+  ScopedTransferBufferPtr buffer(shm_size, helper_, transfer_buffer_);
+  if (!buffer.valid() || buffer.size() < shm_size) {
+    SetGLError(GL_OUT_OF_MEMORY, "GLES2::ScheduleCALayerInUseQueryCHROMIUM",
+               "out of memory");
+    return;
+  }
+  GLfloat* mem = static_cast<GLfloat*>(buffer.address());

[piman, 2016/06/14 00:58:55]

nit: not GLfloat... GLuint if you want to, but I think just void* is fine.

[erikchen, 2016/06/14 01:47:51]

No longer necessary by using PUTn type.

+  memcpy(mem, textures, shm_size);
+  helper_->ScheduleCALayerInUseQueryCHROMIUMImmediate(n);
+}
+
 void GLES2Implementation::CommitOverlayPlanesCHROMIUM() {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] CommitOverlayPlanesCHROMIUM()");