Move SharedMemoryLimits out of WebGraphicsContext3DCommandBufferImpl.

gpu/command_buffer/client/gles2_implementation.h

Index: gpu/command_buffer/client/gles2_implementation.h
diff --git a/gpu/command_buffer/client/gles2_implementation.h b/gpu/command_buffer/client/gles2_implementation.h
index 41ec69353da66b6085b2f158e38cf3fddb0f0410..954f534c9ba26eecc7a2244f19d26690e1938965 100644
--- a/gpu/command_buffer/client/gles2_implementation.h
+++ b/gpu/command_buffer/client/gles2_implementation.h
@@ -124,10 +124,6 @@ class GLES2_IMPL_EXPORT GLES2Implementation
       NON_EXPORTED_BASE(public GpuControlClient),
       NON_EXPORTED_BASE(public base::trace_event::MemoryDumpProvider) {
  public:
-  enum MappedMemoryLimit {
-    kNoLimit = MappedMemoryManager::kNoLimit,
-  };
-
   // Stores GL state that never changes.
   struct GLES2_IMPL_EXPORT GLStaticState {
     GLStaticState();