cc: Allow copy requests to provide a texture.

cc/test/test_web_graphics_context_3d.cc

Index: cc/test/test_web_graphics_context_3d.cc
diff --git a/cc/test/test_web_graphics_context_3d.cc b/cc/test/test_web_graphics_context_3d.cc
index 57183d333308fcccf1ad033415b96ffe1861dfe0..3157e2786bd7e100239ebe332fed8ab1af778f80 100644
--- a/cc/test/test_web_graphics_context_3d.cc
+++ b/cc/test/test_web_graphics_context_3d.cc
@@ -79,6 +79,8 @@ TestWebGraphicsContext3D::TestWebGraphicsContext3D()
       scale_factor_(-1.f),
       test_support_(NULL),
       last_update_type_(NoUpdate),
+      next_insert_sync_point_(1),
+      last_waited_sync_point_(0),
       bound_buffer_(0),
       peak_transfer_buffer_memory_used_bytes_(0),
       weak_ptr_factory_(this) {
@@ -605,6 +607,15 @@ void TestWebGraphicsContext3D::unmapImageCHROMIUM(
   DCHECK_GT(namespace_->images.count(image_id), 0u);
 }
 
+unsigned TestWebGraphicsContext3D::insertSyncPoint() {
+  return next_insert_sync_point_++;
+}
+
+void TestWebGraphicsContext3D::waitSyncPoint(unsigned sync_point) {
+  if (sync_point)
+    last_waited_sync_point_ = sync_point;
+}
+
 size_t TestWebGraphicsContext3D::NumTextures() const {
   base::AutoLock lock(namespace_->lock);
   return namespace_->textures.Size();