Restrict usage of mesa headers to targets that really need them

webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.cc

Index: webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.cc
diff --git a/webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.cc b/webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.cc
index afd843ac393ebfbd156b9976a0b7bef38692f3a9..ed04a0834a1c9750f201d3f1d9f02f4fc0b1519e 100644
--- a/webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.cc
+++ b/webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.cc
@@ -24,7 +24,6 @@
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
 #include "ui/gfx/size.h"
-#include "ui/gl/gl_implementation.h"
 
 using gpu::gles2::GLES2Implementation;
 using gpu::GLInProcessContext;
@@ -60,7 +59,6 @@ WebGraphicsContext3DInProcessCommandBufferImpl::CreateViewContext(
     const blink::WebGraphicsContext3D::Attributes& attributes,
     bool lose_context_when_out_of_memory,
     gfx::AcceleratedWidget window) {
-  DCHECK_NE(gfx::GetGLImplementation(), gfx::kGLImplementationNone);
   bool is_offscreen = false;
   return make_scoped_ptr(new WebGraphicsContext3DInProcessCommandBufferImpl(
       scoped_ptr< ::gpu::GLInProcessContext>(),