Replace context parenting by sharing through mailboxes

Instead of tying contexts together through the parenting mechanism, we can allow
the client to produce the front buffer of an offscreen context into a mailbox,
and use that in the "parent" context.
It simplifies the code and the semantics wrt lost contexts, and we want to use
mailboxes anyway.

BUG=164095

Review URL: https://chromiumcodereview.appspot.com/15798014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@204194 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 5 deletions

diff --git a/ppapi/proxy/ppapi_command_buffer_proxy.cc b/ppapi/proxy/ppapi_command_buffer_proxy.cc
index 04c4468..8ca17e4 100644
--- a/ppapi/proxy/ppapi_command_buffer_proxy.cc
+++ b/ppapi/proxy/ppapi_command_buffer_proxy.cc
@@ -45,11 +45,7 @@ bool PpapiCommandBufferProxy::Echo(const base::Closure& callback) {
   return false;
 }
 
-bool PpapiCommandBufferProxy::SetParent(
-    CommandBufferProxy* parent_command_buffer,
-    uint32 parent_texture_id) {
-  // TODO(fsamuel): Need a proper implementation of this to support offscreen
-  // contexts in the guest renderer (WebGL, canvas, etc).
+bool PpapiCommandBufferProxy::ProduceFrontBuffer(const gpu::Mailbox& mailbox) {
   NOTIMPLEMENTED();
   return false;
 }