Revert of pepper: parse context creation attrib list on the plugin side

gpu/ipc/common/gpu_command_buffer_traits_multi.h

Index: gpu/ipc/common/gpu_command_buffer_traits_multi.h
diff --git a/gpu/ipc/common/gpu_command_buffer_traits_multi.h b/gpu/ipc/common/gpu_command_buffer_traits_multi.h
index ad0e4b52dcb00870875d46df0ddd56c42e4c9a07..78cd98e6b65887734e77003a0a8ec560a1489b65 100644
--- a/gpu/ipc/common/gpu_command_buffer_traits_multi.h
+++ b/gpu/ipc/common/gpu_command_buffer_traits_multi.h
@@ -6,12 +6,9 @@
 
 #include "gpu/command_buffer/common/capabilities.h"
 #include "gpu/command_buffer/common/constants.h"
-#include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/gpu_export.h"
 #include "ipc/ipc_message_utils.h"
 #include "ipc/param_traits_macros.h"
-#include "ui/gfx/ipc/geometry/gfx_param_traits.h"
-#include "ui/gl/gpu_preference.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT GPU_EXPORT
@@ -21,9 +18,6 @@
     gpu::CommandBufferNamespace,
     gpu::CommandBufferNamespace::INVALID,
     gpu::CommandBufferNamespace::NUM_COMMAND_BUFFER_NAMESPACES - 1)
-IPC_ENUM_TRAITS_MAX_VALUE(gl::GpuPreference, gl::GpuPreferenceLast)
-IPC_ENUM_TRAITS_MAX_VALUE(gpu::gles2::ContextType,
-                          gpu::gles2::CONTEXT_TYPE_LAST)
 
 IPC_STRUCT_TRAITS_BEGIN(gpu::Capabilities::ShaderPrecision)
   IPC_STRUCT_TRAITS_MEMBER(min_range)
@@ -126,21 +120,3 @@
   IPC_STRUCT_TRAITS_MEMBER(major_version)
   IPC_STRUCT_TRAITS_MEMBER(minor_version)
 IPC_STRUCT_TRAITS_END()
-
-IPC_STRUCT_TRAITS_BEGIN(gpu::gles2::ContextCreationAttribHelper)
-  IPC_STRUCT_TRAITS_MEMBER(offscreen_framebuffer_size)
-  IPC_STRUCT_TRAITS_MEMBER(gpu_preference)
-  IPC_STRUCT_TRAITS_MEMBER(alpha_size)
-  IPC_STRUCT_TRAITS_MEMBER(blue_size)
-  IPC_STRUCT_TRAITS_MEMBER(green_size)
-  IPC_STRUCT_TRAITS_MEMBER(red_size)
-  IPC_STRUCT_TRAITS_MEMBER(depth_size)
-  IPC_STRUCT_TRAITS_MEMBER(stencil_size)
-  IPC_STRUCT_TRAITS_MEMBER(samples)
-  IPC_STRUCT_TRAITS_MEMBER(sample_buffers)
-  IPC_STRUCT_TRAITS_MEMBER(buffer_preserved)
-  IPC_STRUCT_TRAITS_MEMBER(bind_generates_resource)
-  IPC_STRUCT_TRAITS_MEMBER(fail_if_major_perf_caveat)
-  IPC_STRUCT_TRAITS_MEMBER(lose_context_when_out_of_memory)
-  IPC_STRUCT_TRAITS_MEMBER(context_type)
-IPC_STRUCT_TRAITS_END()