Revert of gpu: GPU service scheduler.

content/browser/compositor/gpu_process_transport_factory.cc

Index: content/browser/compositor/gpu_process_transport_factory.cc
diff --git a/content/browser/compositor/gpu_process_transport_factory.cc b/content/browser/compositor/gpu_process_transport_factory.cc
index c05eb0f826f3c6583c8209355dcfebf8e0ac77fd..540f3be11fda5a20a473981bdca06ec07e21e1b6 100644
--- a/content/browser/compositor/gpu_process_transport_factory.cc
+++ b/content/browser/compositor/gpu_process_transport_factory.cc
@@ -42,7 +42,6 @@
 #include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
-#include "content/common/gpu_stream_constants.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
@@ -134,11 +133,6 @@
       content::GpuDataManagerImpl::GetInstance()->CanUseGpuBrowserCompositor());
   DCHECK(gpu_channel_host);
 
-  // All browser contexts get the same stream id because we don't use sync
-  // tokens for browser surfaces.
-  int32_t stream_id = content::kGpuStreamIdDefault;
-  gpu::SchedulingPriority stream_priority = content::kGpuStreamPriorityUI;
-
   // This is called from a few places to create different contexts:
   // - The shared main thread context (offscreen).
   // - The compositor context, which is used by the browser compositor
@@ -167,9 +161,10 @@
 
   GURL url("chrome://gpu/GpuProcessTransportFactory::CreateContextCommon");
   return make_scoped_refptr(new ui::ContextProviderCommandBuffer(
-      std::move(gpu_channel_host), stream_id, stream_priority, surface_handle,
-      url, automatic_flushes, support_locking, gpu::SharedMemoryLimits(),
-      attributes, shared_context_provider, type));
+      std::move(gpu_channel_host), gpu::GPU_STREAM_DEFAULT,
+      gpu::GpuStreamPriority::NORMAL, surface_handle, url, automatic_flushes,
+      support_locking, gpu::SharedMemoryLimits(), attributes,
+      shared_context_provider, type));
 }
 
 #if defined(OS_MACOSX)