Remove canvas throttling in GLES2Implementation::CopyTextureToParentTexture.

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 7bd07b4212886bb4eba8fb5060aea91926dff144..e14d7cdf2c239ca350632489939b4a5c8a759257 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -704,15 +704,8 @@ void GLES2Implementation::SwapBuffers() {
 
 void GLES2Implementation::CopyTextureToParentTextureCHROMIUM(
     GLuint client_child_id, GLuint client_parent_id) {
-  // Wait if this would add too many CopyTextureToParentTexture's
-  if (swap_buffers_tokens_.size() == kMaxSwapBuffers) {
-    helper_->WaitForToken(swap_buffers_tokens_.front());
-    swap_buffers_tokens_.pop();
-  }
   helper_->CopyTextureToParentTextureCHROMIUM(client_child_id,
       client_parent_id);
-  swap_buffers_tokens_.push(helper_->InsertToken());
-  Flush();
 }
 
 void GLES2Implementation::GenSharedIdsCHROMIUM(