Reland of Revert of gpu: introduce glCopySubTextureCHROMIUM (patchset #1 id:1 of https://codereview…

gpu/command_buffer/client/gles2_c_lib_autogen.h

Index: gpu/command_buffer/client/gles2_c_lib_autogen.h
diff --git a/gpu/command_buffer/client/gles2_c_lib_autogen.h b/gpu/command_buffer/client/gles2_c_lib_autogen.h
index 87616e74a0dc6b324f1f92c54f8d87fefc7b9348..7e0da4b5902fbaaed84b405cdbeba39bd96349ef 100644
--- a/gpu/command_buffer/client/gles2_c_lib_autogen.h
+++ b/gpu/command_buffer/client/gles2_c_lib_autogen.h
@@ -1158,12 +1158,19 @@ void GLES2TexImageIOSurface2DCHROMIUM(GLenum target,
 void GLES2CopyTextureCHROMIUM(GLenum target,
                               GLenum source_id,
                               GLenum dest_id,
-                              GLint level,
                               GLint internalformat,
                               GLenum dest_type) {
-  gles2::GetGLContext()->CopyTextureCHROMIUM(target, source_id, dest_id, level,
+  gles2::GetGLContext()->CopyTextureCHROMIUM(target, source_id, dest_id,
                                              internalformat, dest_type);
 }
+void GLES2CopySubTextureCHROMIUM(GLenum target,
+                                 GLenum source_id,
+                                 GLenum dest_id,
+                                 GLint xoffset,
+                                 GLint yoffset) {
+  gles2::GetGLContext()->CopySubTextureCHROMIUM(target, source_id, dest_id,
+                                                xoffset, yoffset);
+}
 void GLES2DrawArraysInstancedANGLE(GLenum mode,
                                    GLint first,
                                    GLsizei count,
@@ -2361,6 +2368,10 @@ extern const NameToFunc g_gles2_function_table[] = {
      reinterpret_cast<GLES2FunctionPointer>(glCopyTextureCHROMIUM),
     },
     {
+     "glCopySubTextureCHROMIUM",
+     reinterpret_cast<GLES2FunctionPointer>(glCopySubTextureCHROMIUM),
+    },
+    {
      "glDrawArraysInstancedANGLE",
      reinterpret_cast<GLES2FunctionPointer>(glDrawArraysInstancedANGLE),
     },