Revert 76840 - Removed GPU plugin....

chrome/plugin/webplugin_delegate_stub.cc

Index: chrome/plugin/webplugin_delegate_stub.cc
===================================================================
--- chrome/plugin/webplugin_delegate_stub.cc	(revision 76844)
+++ chrome/plugin/webplugin_delegate_stub.cc	(working copy)
@@ -28,6 +28,10 @@
 #include "printing/native_metafile.h"
 #endif  // defined(OS_WIN)
 
+#if defined(ENABLE_GPU)
+#include "app/gfx/gl/gl_context.h"
+#endif
+
 using WebKit::WebBindings;
 using WebKit::WebCursorInfo;
 using webkit::npapi::WebPlugin;
@@ -68,6 +72,13 @@
   in_destructor_ = true;
   child_process_logging::SetActiveURL(page_url_);
 
+#if defined(ENABLE_GPU)
+  // Make sure there is no command buffer before destroying the window handle.
+  // The GPU service code might otherwise asynchronously perform an operation
+  // using the window handle.
+  command_buffer_stub_.reset();
+#endif
+
   if (channel_->in_send()) {
     // The delegate or an npobject is in the callstack, so don't delete it
     // right away.
@@ -133,6 +144,10 @@
                         OnHandleURLRequestReply)
     IPC_MESSAGE_HANDLER(PluginMsg_HTTPRangeRequestReply,
                         OnHTTPRangeRequestReply)
+    IPC_MESSAGE_HANDLER(PluginMsg_CreateCommandBuffer,
+                        OnCreateCommandBuffer)
+    IPC_MESSAGE_HANDLER(PluginMsg_DestroyCommandBuffer,
+                        OnDestroyCommandBuffer)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(PluginMsg_SetFakeAcceleratedSurfaceWindowHandle,
                         OnSetFakeAcceleratedSurfaceWindowHandle)
@@ -401,6 +416,29 @@
   delegate_->InstallMissingPlugin();
 }
 
+void WebPluginDelegateStub::OnCreateCommandBuffer(int* route_id) {
+  *route_id = 0;
+#if defined(ENABLE_GPU)
+  // Fail to create the command buffer if some GL implementation cannot be
+  // initialized.
+  if (!gfx::GLContext::InitializeOneOff())
+    return;
+
+  command_buffer_stub_.reset(new CommandBufferStub(
+      channel_,
+      instance_id_,
+      delegate_->windowed_handle()));
+
+  *route_id = command_buffer_stub_->route_id();
+#endif  // ENABLE_GPU
+}
+
+void WebPluginDelegateStub::OnDestroyCommandBuffer() {
+#if defined(ENABLE_GPU)
+  command_buffer_stub_.reset();
+#endif
+}
+
 void WebPluginDelegateStub::CreateSharedBuffer(
     uint32 size,
     base::SharedMemory* shared_buf,