Improve BindBufferBase/BindBufferRange in GPU command buffer.

gpu/command_buffer/service/test_helper.h

Index: gpu/command_buffer/service/test_helper.h
diff --git a/gpu/command_buffer/service/test_helper.h b/gpu/command_buffer/service/test_helper.h
index d0e23991f804e7b75abf30493b80b8c365802889..28a6a84d7a6d128dadc24333d2aeee9e44ecaf4a 100644
--- a/gpu/command_buffer/service/test_helper.h
+++ b/gpu/command_buffer/service/test_helper.h
@@ -63,6 +63,10 @@ class TestHelper {
   static const GLint kMaxProgramTexelOffset = 7;
   static const GLint kMinProgramTexelOffset = -8;
 
+  static const GLint kMaxTransformFeedbackSeparateAttribs = 4;
+  static const GLint kMaxUniformBufferBindings = 24;
+  static const GLint kUniformBufferOffsetAlignment = 1;
+
   struct AttribInfo {
     const char* name;
     GLint size;