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

gpu/blink/webgraphicscontext3d_impl.cc

Index: gpu/blink/webgraphicscontext3d_impl.cc
diff --git a/gpu/blink/webgraphicscontext3d_impl.cc b/gpu/blink/webgraphicscontext3d_impl.cc
index 8fe23ee54933ca82336732698457a16aa95e2d34..a47096eb9c47453574126fdb10b402678c0e3ed5 100644
--- a/gpu/blink/webgraphicscontext3d_impl.cc
+++ b/gpu/blink/webgraphicscontext3d_impl.cc
@@ -1244,7 +1244,18 @@ void WebGraphicsContext3DImpl::ConvertAttributes(
   output_attribs->fail_if_major_perf_caveat =
       attributes.failIfMajorPerformanceCaveat;
   output_attribs->bind_generates_resource = false;
-  output_attribs->webgl_version = attributes.webGLVersion;
+  switch (attributes.webGLVersion) {
+    default:

[Zhenyao Mo, 2015/08/28 17:16:24]

nit: move default to the last.

[Kimmo Kinnunen, 2015/08/31 12:23:12]

Done...

+      NOTREACHED();
+    case 1:
+      output_attribs->context_type =
+          ::gpu::gles2::ContextCreationAttribHelper::CONTEXT_TYPE_WEBGL1;
+      break;
+    case 2:
+      output_attribs->context_type =
+          ::gpu::gles2::ContextCreationAttribHelper::CONTEXT_TYPE_WEBGL2;
+      break;
+  }
 }
 
 }  // namespace gpu_blink