command_buffer: Add support for creating non-WebGL ES 3 contexts

blimp/client/compositor/blimp_context_provider.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "blimp/client/compositor/blimp_context_provider.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/lazy_instance.h"
 #include "gpu/command_buffer/client/gl_in_process_context.h"
@@ skipping 40 matching lines @@
   context_thread_checker_.DetachFromThread();
 
   gpu::gles2::ContextCreationAttribHelper attribs_for_gles2;
   attribs_for_gles2.alpha_size = 8;
   attribs_for_gles2.depth_size = 0;
   attribs_for_gles2.stencil_size = 0;
   attribs_for_gles2.samples = 0;
   attribs_for_gles2.sample_buffers = 0;
   attribs_for_gles2.fail_if_major_perf_caveat = false;
   attribs_for_gles2.bind_generates_resource = false;
-  attribs_for_gles2.webgl_version = 0;
+  attribs_for_gles2.context_type = gpu::gles2::CONTEXT_TYPE_OPENGLES2;
   attribs_for_gles2.lose_context_when_out_of_memory = true;
 
   context_.reset(gpu::GLInProcessContext::Create(
       nullptr /* service */, nullptr /* surface */, false /* is_offscreen */,
       widget, gfx::Size(1, 1), nullptr /* share_context */,
       false /* share_resources */, attribs_for_gles2, gfx::PreferDiscreteGpu,
       gpu::GLInProcessContextSharedMemoryLimits(),
       nullptr /* gpu_memory_buffer_manager */, nullptr /* memory_limits */));
   context_->SetContextLostCallback(
       base::Bind(&BlimpContextProvider::OnLostContext, base::Unretained(this)));
@@ skipping 107 matching lines @@
     destroyed_ = true;
   }
 
   if (!lost_context_callback_.is_null())
     base::ResetAndReturn(&lost_context_callback_).Run();
   if (gr_context_)
     gr_context_->abandonContext();
 }
 
 }  // namespace blimp